Sorry to hear your going through this. When I left my husband, I left the JW's, lost all my JW friends and had to cling to my worldly friends for support till I got on my feet I was fortunate I had Howard my current husband to get me through the grief of losing everying including my 15 year old son due to an auto accident.
I've seen witness leave gradually, and ones like me just cut all ties and go. I can't say which was best because everyone is different. For Me it was the best way to go and I've never regreted doing it as I did. Was it painful, oh yah very, but the alternative would have been like slow torture. The love and feeling I had for my JW husband was dead, so it was easier. I knew there was no way I could be out of the JW's and him and I remain together with him very active in it. There wasn't enough in common to support the differences. I know this is a tough time we all know how tough it is. People who say divorce are easy are full of it, getting to the point of divorce is the one of the hardest things life ever gives you. The up side is when you connect to someone who is not an active JW's, life is so much better and easier.