That is a good question
it sounds like your husband wants to help but don't need to talk about daycare 24/7 so let him know gently as leebee suggested on a good day that you need to switch off from daycare and not talk about it- when the kids are gone you are done for the day and clocked out of daycare

my husband works at home so he helps me with the lunch time or anytime that I need help but I think we just found what works for us after 13 years of daycare in our home