Respectful advice welcomed (husband issues)

Hey guys im just posting here to mostly vent but also to see if I can relate to anyone. I’ve been married 4 years, we have a 2 year old an one on the way. My husband and I get along most the time but there are times where it gets overwhelming and rough because every month he gets in a funk where he gets depressed and has anxiety, I try hard to be there for him but I also can’t do everything, he has to take steps to feel better but I feel he doesn’t, he’s been to a therapist but he stopped going. When he’s in these funks I just don’t wanna be around him cuz he complains about everything. What also bugs me is I don’t like making plans anymore with my family or even friends cuz he’ll agree to it but when it comes time he’ll not wanna go and then when I communicate that with him he disagrees and says no I never say no. I understand people go through days but I feel my husband needs to get some type of help but me telling him won’t help. I don’t know it’s sucks being in this position cuz I’m the type of person that will feed off of negative energy and it kills me, my therapist said to differentiate my feelings from him but it’s so hard to.