Oddly enough, being not even of vegetarian persuasion, I said to keep going. I've found the concept of juice feasting really interesting and have read a lot on it in the last couple of weeks. The impression I get is that it varies by person, but that you're still in the tougher zone. Additionally, I've never seen you do less than a 30 day trial. To me, that says something. I would suggest that you re-set the goal of 92 days to either 30 days, the day before thanksgiving, or the day before christmas.
However, there is something not being addressed, and that's the feeling of isolation. My heart aches for you there, and I'm so sorry. That *needs* to be addressed in some fashion. The question is "how?" There are ways to bond without food - food just seems to be one of the most primal. Maybe replace one primal with another; ie., get a baby sitter - if possible a relative who can kep them for 24 hours, and have a special date with Erin. If you use your time (ahem) constructively enough, then the afterglow should be enough to ground & reconnect you there. (Yes, seriously. Sex isn't the be-all and end-all, but it can be a very useful tool for connection.)
Then the next day, take the kids someplace that's special to you guys that's always been good for connecting before. (I don't know where, I'm not a parent. Maybe they love miniature golf? Maybe there's someplace they've been wanting to go? Maybe there's someplace that they almost always seem to grow and discover something new?)
Heck, maybe the older one wants to learn blackjack... o
Good luck.