Do this for yourself and don't worry about your DH. It may be that he doesn't ask about your meetings because he doesn't want to pry or make you feel bad if things don't go like you'd like or expect. My DH knows I go to meetings on Wednesdays, but he waits for me to bring it up. Sometimes I have a week where I gain and I know, intellectually, why, but I don't really want to talk with him about it (he is one of those guys who, when he gets ten pounds above where he wants to be, he'll lose it in a month and be fine for a year). So, your DH may be more supportive than you think. Also, sometimes you have to tell your DH to be supportive!
Congrats on your baby boy!