Time Scarcity

My Husband voices his struggle with time scarcity regularly. This greatly impacts me as I want to help him and step in and complete a task when he voices that he is so stressed. My thought is that he is not managing his time well. He would agree with this. My thought is that I want to be a wife who supports and helps her husband and if I don’t help out (increased housework, childcare, be okay with canceling a meeting between the 2 of us that we had scheduled for a week) that I am being mean. I don’t think that he is going to change his patterns. I don’t know how to be okay with his time scarcity.