Water helped to an extent. I believe at some point I just lied there for a while and didn't give in. Eating just a little but not enough to not have a deficit anymore also helped. I've done this whole thing very slow and steady in general, and I think that helps with consistency.

Someone here or on reddit once had a problem with their mind keeping them up for either hunger or to check their phone or something, and they started doing pushups every time it happened, and some part of the brain learned the association and cut it out. I never did that but it might be worth trying.