I'm really struggling with my husband. We have two kids under 5 and are renovating a house. I work part time, and when I'm not doing that I'm either with the kids when they're not in nursery, or I'm helping him at the house which he's working on 6 days a week. I do everything with the kids at the moment bar some of the bedtime routines. I keep the house as organised as I can, do all the cooking/cleaning, manage all the kids appointments and my own for my health issues.
The issue is I wanted to get help from tradesmen with this renovation as we can afford it this time and I didn't want the crazy overwhelm of working like a dog to get it up to scratch. Although he had agreed to that he has now backed out of that completely and wants to do it all himself. That's fine by me but it's too much for him to do alone as there's been some trickier things needing done and it's just a big house that's got lots of work needing done. He now expects me to go and work in the house some evenings after a full day of work then sorting kids after nursery and doing dinner and I've said I don't want to do that as it's too much for me and I'll get overwhelmed if I take on too much. He calls me selfish and complains about the amount of work he's having to do despite the fact I told him he didn't need to work himself to the bone and I could organise help. Every offer to secure tradesmen has been met with resistance and when I reiterate that I'm unwilling to do more than I'm capable of he calls me stubborn and selfish. I'm at my wits end and it feels like he just doesn't listen to me at all. What can I do to make him understand how upsetting this is for me, or AIBU and should I push myself to my limit to help get our house liveable?