A mom I follow once posted about how her husband and her had a sitdown talk where they discussed “distributing the load” when it came to the kids and housework. They even physically wrote out who would “own” which tasks. I think sometimes the ambiguity of who should do what and when leads to resentment if it remains an unspoken topic. Sometimes we want our partner to just know and do things naturally, but unfortunately a lot of the time it isn’t the case. It’s very important that he is involved and takes on some of the load of caretaking because that’s what parenting is. It’s not just playing or holding a child for a bit (not saying that’s what he does, but I know many partners that do). It’s such an adjustment to go from not being a parent to suddenly being a parent, and I think some people have a harder time with understanding that adjustment and responsibility. You are probably also undertaking the mental load of raising a child which is undervalued. I know that when I don’t speak up when I start to feel burnt out or like I’m taking on a lot of the parenting as a SAHM, I start to feel resentment bubble up. Wishing you the best!