We have a Christmas tradition whereby Christmas Day is spent with my eldest DD from previous relationship, DP and I, and our toddler DD. DP's kids from previous relationship (both teens) spend it with their mum and come over Boxing Day to ours for a dinner that DP cooks.
Today DP is appearing to be mega insanely stressed trying to prep this dinner. He has his teen son helping him, but honestly the chaos and clattering that's coming from the kitchen. So I went to investigate. The pair of them are just haphazardly chopping veg etc. I asked if they needed a hand - no, it's all under control apparently. I asked DP what time the turkey needed to come out the oven given it's been in there since 8am. He said "any time now as it needed 5 hours" (its bloody huge) and then he started to take it out the oven. However this was at 12pm. So I pointed out it's not been 5 hours yet and it needs another hour. Stressed he was saying "oh right yeah, ok, I'll put it back". I then asked if they needed a hand again, no it's all fine. I asked if they had a plan for timings (which I know are hard to get right with so many things to cook, and also with him not seemingly aware he was about to undercook the turkey by an hour, I felt the need to check). No plan, I'm told. We don't need one.
Anyway, I said I think it would be helpful if you had one and I'm happy to help? So I wrote down the timings of everything they were cooking, working backwards so they knew what to put in the oven and when etc (he's going all out and cooking about 8 different veg / things with the dinner). I put together a clear list of what goes in the oven when and handed it to his son, his son was like yeah I think that's a good idea actually thanks. DP just ignored me and carried on.
AIBU that you cannot cook something on the scale of a dinner this size, with about 8-9 items with different timings, without some sort of vague plan? His haphazard approach is just a reflection of who he is as a person tbh. I'm the thinker/planner and he just cracks on without a thought. But we'd have been eating undercooked turkey had I not intervened. And to be fair, last year I had no part in the Boxing Day dinner making, and all of the veg was massively undercooked- the carrots were basically crunchy and raw. So I wanted to help him, But then part of me thinks, am I micromanaging him?
So basically - I'm asking was the plan necessary for this task, or should I have just left him to it?