Sorry to hear it, I don't know what to tell you to do, but I will share my personal experience and say that I wouldn't abandon your dream yet.

I spent years working outside the house, whether it was for myself or an employer I was not at home. My wife was/is a stay at home mom as well and that is a full time gig I sure as hell wouldn't want, it is hard. About 3 years ago I started working out of my house, and honestly my wife and I didn't really talk a whole lot about logistics we just did it and honestly had some excitement about it.

Well.... About 3 months in I noticed we both were being shorter with each other and honestly we were more distant even though we were in the same space. After a couple of more months we both realized something wasn't right. We had to have a few conversations about boundaries, separation of space and expectations. It took probably another 2-3 months to get a balance around it, so if you are doing the math from me starting at home full time to us having some balance it was like 6-8 months.

Somethings we did (still do):

1. Dedicated one room to be my office and put doors on it to keep that space isolated. We also setup some rules around it, if I was in my office with the doors shut, she had to consider that I was working and needed to respect that and not interrupt me unless necessary and even then to knock first. If the doors were open then it was open and all I asked was for her to not interrupt me if I was madly typing something out. :)

2. Being me, I also was making suggestions why she should do something differently around the house, or when she would complain about something I'd do the stupid male thing and offer a solution when all she wanted was the venting time. Even if my way was more efficient or better, she was running the house and I needed to respect that and let her do it. If she needed help she could ask me and I'd do what I could, but we agreed we'd have those as conversations not me just sticking my nose into something and commenting etc.

3. I spend a little time every week outside the house doing my work. This helps her and I. For me the change in view and different environments can be inspiring and for her she gets a break from me and to have some alone time. We all need some alone time.

4. I set hours on my work, and do my best not to violate them unless something is going on or its crunch time. This lets the house have a more natural flow, e.g. work hours and play hours.

5. We go out to lunch at least 1-2 times a week together, outside the house as a treat to ourselves, like a mini-date. My wife rocks and will also make me lunch a lot of days cause she knows I will work right though lunch and not eat which is bad.

6. Also, we joined a gym and sometimes go workout together and other times go separately. But it let us have time again outside the house.

Over time we have relaxed rule 1 more, but in the earlier days it really helped us get the cadence of the house down. Also, I get that it seems like you need less time together sometimes, but in reality we found that it wasn't the amount of time we were spending but how we were spending it and respecting each others boundaries. We had and have a solid marriage so while this took us time to figure out we just had to get the respect and rules in place. And of course, from time to time we still get on each others nerves during a given week, I know I can be difficult sometimes if for no other reason is that I am a constant smart ass. But that's just normal marriage to me.

TL;DR> Set boundaries, respect them, setup distinct times for work/home, respect her "job", get out of the house weekly for even a few hours and setup dates or activities together outside the house.

Good luck.