I was able to hold myself together better in some ways when we were in the worst of it...I think you are running on emotion and deperation, and it keeps you going. But once the 'crisis' is over I seem to crumble... I think I am just tried of trying to juggle everything that it catches up to me!!
limbo, you aren't used to having a real partner yet, someone who will back you unconditionally when you're feeling overwhelmed and overextended. Why don't you give H a chance to support you now. Tell him how it is for you with so many demands on your time and attention and energy, and ask him if he will help you. Then let him help you. (Warning: this might take a little getting used to!)
