I need advice....bad..

So me and my husband had been talking about having a baby since last year. We had agreed that no matter the circumstances we'd start trying the beginning of this year. We can't have a baby the normal way seeing as he's transgender, female to male, and we have a few friends willing to help us out. So far since the first he's been wanting to talk about it less and less. I know all his fears, hell most of them we share. I know he doesn't feel ready, and we're living in a one bedroom apartment that belongs to our other friends. I sleep on the couch and he sleeps in a chair. I know that if we don't start trying soon it'll never happen..we haven't talked about it in a few weeks because it always leads to a fight...i love him and i know where he's coming from in all of this but the more time we don't talk about it and don't do anything about it the more depressed i become...i haven't even wanted to have sex in like, 3 weeks. I feel like giving up. I just feel so lost and hopeless and I'm more than ready to be a mom. I know in my soul its what I'm meant for. I'm starting to loose hope about becoming a mom ever...help?