I, They can still be in crisis and act civilized at times. As long as you are not having relationship/marriage discussions, he will be some what civilized. It's when the dicussions turn to the relationship that he will flip to angry man.
I, if he offers to assist in any way, take him up on it, if you feel comfortable to do so. When he does do something, please be sure to thank him. He needs to know that you appreciate what he's still doing even if he's acting like the horse's behind.
As for you, take some time and just relax. It's difficult, but your garden is calling you. Take your frustration out on the weeds and trimming. Physical labor is one of the best ways to work out the kinks in your body and in your mnd.
Please take care of yourself. Your little girl needs you now more than ever. Leave your husband be, take every day he is being civil and use it to your advantage.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.