My Mama just passed away and I feel like my fiancé isn’t really supportive or helpful..

I am taking it extremely hard, but at the same time, I’m trying to hold down the fort as best as I can, but some days are worse than others. He wants to cook every single night, which means me preparing the meat, and sides, and him throwing them on the grill. I’m ok with grilled cheese or turkey sandwiches a couple of nights a week right now, but I guess he’s too good for all of that. Anyway, he’s home right now, has been all Summer, and rarely helps me with the house, aside from mopping, but he bitches when the towels haven’t been taken out of the dryer and put away, or the dishes haven’t been washed. Why can’t he help with those things, without making comments, especially knowing I’m grieving and trying my best to hold it together for our family?