If it's any consolation I am in a similar situation but just a few years further down the road. My kids are older now and all are jw free, my wife is still a witness. My wife and I stayed together and I put all my energy into my kids and building a strong strong bond with them. Including putting off things I wanted to do for myself or with friends and even my career at times. Even during the rough years with kids I see the benefits of my close relationship with my kids. My wife didn't build a relationship with them, perhaps because they won't survive Armageddon, and it shows as well.
Hang in there Daniel and make sure you take care of your physical health as well as mental health.