Todd Fisher is opening up about the tragic loss of two of his beloved family members, mom Debbie Reynolds and sister Carrie Fisher, who died just one day apart in December 2016. 
 
 While speaking with ET's Nancy O'Dell on Wednesday, the 59-year-old producer revealed that nearly three months later, he's still feeling "a little disoriented," but "doing fine." 
 
 
 
 WATCH: Carrie Fisher Once Said She Wanted Harrison Ford to Sing at Her Oscars In Memoriam Tribute 
 
 "I think it's important that you grieve and feel it," he said. "No matter if you're famous or not, I think having an event and having movies and pictures and feeling that is a good thing. It's part of the process of grieving." 
 
 "There's a freeing sense to all of that," he continued. "At the same time, it's obviously a huge loss and they were my girls." 
 
 Todd reflected on the heartbreaking moment when Carrie died after going into cardiac arrest on a plane at the age of 60. He told ET that his mother actually asked him for "permission" to "go" just a few hours after Carrie's death. 
 
 "My mother said to me the night that Carrie died ... we were talking that night and I didn't know what was happening, but she was setting me up for her leaving the planet," he remembered. "And she really just said to me, 'You know, I know that was really hard on you losing your sister.' [And I said], 'I mean, Carrie was there holding my hand when I took my first steps. I have film of that and it will be in the memorial.' And when I was editing that, it ripped my heart out. But my mother said, 'I know that's tough. It might be tougher even, you know… I don't know for sure when I [will] go.'" 
 
 
 
 WATCH: Carrie Fisher, ‘Star Wars’ Princess and Prolific Writer, Dies at 60 
 
 "I was like, 'Well, look, fortunately we don't have to face that right now, you know, we just face this,'" he continued. "But then she was like asking my permission [to go]. I [said], 'You're going to be OK, everything is under control.' And she starts running me back through her estate, which we had done many times. [She's like], 'You're going to take my dog and, you know, all these little instructions.' And [she] even [went through] last-minute changes due to the fact that Carrie left first, as far as the memorial service." 
 
 "I thought that we were just going through these events just like one would go back through an estate," Todd added. "But instead the next morning, we had a little further dialogue and she chose to leave the planet in front of my face two feet away. If you had told me this story and I wasn't there, I would have a very hard time believing what I saw. But she literally looked at me and said, 'I want to go be with Carrie' and closed her eyes and went to sleep." 
 
 
 
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 According to Todd, Debbie made it clear in her estate that she didn't "want a big deal" of a service, and asked that she be cremated when the time came. But the night before she died as a result of a stroke, the former Singin' In the Rain star, 84, "changed the whole game." 
 
 "She no longer wanted to be cremated, she wanted to be buried with Carrie," he explained. "Now she wanted the tomb idea that I had brought up long ago and got sunk. 'No, I don't want a big tomb, I don't want to draw any attention to myself,' [she said], but now with Carrie gone she said, 'OK.' So we bought this great tomb over at Forest Lawn [cemetery]. She changed her mind that night." 
 
 Todd said the doctors have an actual "fancy, medical term" for situations like this, but he can't make up what he witnessed that night while talking with his mom. 
 
 
 
 WATCH: Debbie Reynolds Laid to Rest One Day After Carrie Fisher's Private Memorial Service 
 
 "I'm telling you what it looked like," he said. "It looked like she asked permission to leave, told me she was going to leave, told me she loves me, closed her eyes and went to sleep." 
 
 "That's kind of a magical, beautiful thing," he added. "As much as it's also hard, it's what she wanted." 
 
 Todd said that following Debbie's death, he saw a lot of stories in which he was misquoted for saying that his mother had died from a broken heart. 
 
 
 
 WATCH: Ellen DeGeneres Pays Tribute to Carrie Fisher: 'I Miss You, Carrie. I Love You' 
 
 "I did not actually say that," he confirmed. "The news said she died of a broken heart. I actually contradicted it. I said, 'No, that is not true. She didn't die of a broken heart, she went to be with Carrie. She said those words to me.'" 
 
 Todd further broke down that last conversation he had with his mother, telling ET he remembered "her little forehead was crinkled," something she would do "when she was worried." 
 
 "I said, 'Whats up?'" he recalled. "She said, 'You know I really love Carrie.' And I said, 'Of course, I understand that.' She said, 'I don't mean I do not love you.' I said, 'You don't need to say that, I get it! You know, you love in different degrees. You don't need to say that.'" 
 
 "And she said, 'I really want to be with her,'" he continued. "Those are all the words that were spoken and she closed her eyes. So, she did what she wanted to do. That wasn't like a person that was sitting there saying, 'My heart is broken.' It was not some scene from Macbeth. She truly just understood what happened." 
 
 "It wasn't a mystery to her," he added. "In fact, I'm the one that was crying when I came back from the hospital, not her. She was like, 'Well, you know, I hope that it had gone a different way, but now that it's gone a different way, I'll go be with her.'" 
 
 Later in our interview, Todd told ET that to this day, he's "really OK" with "Debbie's exit," but "not so OK" with Carrie's. 
 
 "Carrie was in the middle of what was, I thought, her finest hours," he explained. "Her creativity was peaking, the Star Wars thing was obviously back in spades. Everything that she was doing was turning to gold." 
 
 
 
 The public memorial service for Debbie and Carrie will be live-streamed on DebbieReynolds.com on Saturday March, 25 at 1 p.m. PDT. 
 
 
 
 
 
 WATCH: Billie Lourd Pays Tribute to Mother Carrie Fisher With Heart-Wrenching Flashback Photo ||||| My Girls by Todd Fisher 
 
 A LIFETIME WITH CARRIE AND DEBBIE 
 
 A love letter to two amazing women by the person who knew them best... 
 
 MY GIRLS IS ON SALE NOW 
 
 A revelatory and touching tribute to the lives of Carrie Fisher and Debbie Reynolds written by the person who knew them best, 
 
 Todd Fisher’s poignant memoir is filled with moving stories of growing up among Hollywood royalty and illustrated with never-before-seen photos and memorabilia. 
 
 If you purchase or own a copy of My Girls and submit your proof of purchase / ownership we'll send you exclusive access to an online photo album of never-before-seen photos of Debbie, Carrie and Todd. 
 
 In December 2016, the world was shaken by the sudden deaths of Carrie Fisher and her mother Debbie Reynolds, two unspeakable losses that occurred in less than twenty-four hours. The stunned public turned for solace to Debbie’s only remaining child, Todd Fisher, who somehow retained his grace and composure under the glare of the media spotlight as he struggled with his own overwhelming grief. 
 
 
 
 The son of "America’s Sweethearts" Debbie Reynolds and Eddie Fisher, Todd grew up amid the glamorous wealth and pretense of Hollywood. Thanks to his funny, loving, no-nonsense mother, Todd remained down to earth, his own man, but always close to his cherished mom, and to his sister through her meteoric rise to stardom and her struggle with demons that never diminished her humor, talent, or spirit. 
 
 
 
 Now, Todd shares his heart and his memories of Debbie and Carrie with deeply personal stories from his earliest years to those last unfathomable days. His book, part memoir, part homage, celebrates their legacies through a more intimate, poignant, and often hilarious portrait of these two remarkable women than has ever been revealed before. 
 
 
 
 With thirty-two pages of never-before-seen photos and memorabilia from his family’s private archives, Todd’s book is a love letter to a sister and a mother, and a gift to countless fans who are mourning the deaths of these two unforgettable stars.
– Todd Fisher says his mother, Debbie Reynolds, set him up "for her leaving the planet" the day his sister and Reynolds' daughter, Carrie Fisher, died in December, the AP reports. In a new interview with Entertainment Tonight, Fisher says that after telling him she knew how hard it was for him to have lost his sister, Reynolds added, "It might be tougher even, you know … I don't know for sure when I [will] go." She also started talking about her estate and her wishes for a memorial service, "and [she] even [went through] last-minute changes due to the fact that Carrie left first, as far as the memorial service." It was like she was "asking my permission" to go, he says. The 84-year-old Reynolds suffered a stroke and died one day after her 60-year-old daughter died following a heart attack. Todd Fisher tells ET, "She literally looked at me and said, 'I want to go be with Carrie' and closed her eyes and went to sleep." He adds that, though it's hard, it's also "kind of a magical, beautiful thing." Fisher says he's "really OK" with his mother's death, but "not so OK" with his sister's. He says the revival of the Star Wars films and Fisher's role as Princess Leia meant she was in the middle of what he thought to be "her finest hours." Fisher and Reynolds will be remembered Saturday at a Hollywood memorial service that will be live-streamed here.