What the parent needs to do is to work at it. My best advice for fathers in this situation is to use modern technology to stay in touch, particularly email. The reason I say this instead of the phone is because when you call a teen on the phone, teens think that at that moment they are in demand to respond right away. With email they can think about what they want to say and write when they want to. If you send an email message, the teen can compose a more thorough response.
Email is great.
The letter becomes more of a treasure than a memory of a phone call is. So when you see your children, it is important to have fun, but it is more important to be a father, like through monitoring their homework, their friends, doing the things that good fathers do when they are with their children. A rule that I wish didn't exist is that children are more likely to do what you do than what you say. If you tell little white lies, then your teen gets the idea it is OK to tell lies. So what you want to do instead is to make sure you model healthy behavior and virtuous behavior, like honesty.