This ain’t the 1950s anymore. Make sure you’re offering up all the help you can give and don’t take no for an answer. Thanksgiving is a lot less stressful when you treat it like a potluck :)
Dad here, I also do most of the cooking for my family and thus and doing Thanksgiving too. Wife and kids are definitely helping where I ask them though: From chopping to dishes, it all adds up and saves time.
I finally convinced my mother (maybe five years ago) the main dish was my responsibility. She's been raving how relaxing the holidays are, but I get over there and we have to ask her to stop cooking extra things. Like the kitchen is already crowded with gluttonous excess and the next week's food. She just genuinely doesn't know what to do except cook, it's so ingrained. We've got her playing board games now, tho. I'd be there, but smoke break.