If he was planning to divorce you, he would NOT be talking about wanting to get back together and about working on his own issues. But that fear of abandonment is hard (impossible?) to shake sometimes.
Maybe you could discuss with him whether you both need a bit of a break while he's still got this deadline? Maybe you could suggest you just have a short meeting for coffee once a week or something? It really sounds like he's not in the best place to be the husband you need and deserve right now, and he probably knows that too. But you should probably stay connected in some small way, don't go completely dark or NC I think.
Maybe true love is giving him kindness and empathy even though he can't respond right now? Maybe true love looks like forgiving his current behaviour knowing he's not in a place to do anything else? Maybe true love is putting your needs on the back burner for a little longer and putting him first? You have a deadline at least, you couldn't do it forever but it sounds like your marriage right now needs you to put his needs first for just a few more weeks.
I know that fear, it's very, very hard to feel like you might ultimately be rejected and abandoned, but don't reject him first because of that fear.
