Thanks for the responses.
I don’t think it reaches the threshold to be “daily” or “exhausting” or “constant” for DH. It’s not an issue for when we’re at home or dining out as a household - which is the vast majority of the time (as I’d imagine it is for most people). It’s also not an issue with people I’m very close to (my close friends or my parents, etc). It’s only around people who are acquaintances to me or people I’m not close enough to (colleagues, DH’s friends, DH’s family).
It is mainly an issue at work - I have breakfast there but arrive before most of the office. Because the office is glass, I’ll still have something performatively “healthy” like a yoghurt or banana. Then I can’t have lunch if the person I share my office with is eating at her desk but I can eat (at my desk) if she’s out for lunch and I close the door. If I have a working lunch with food provided (training, networking, team meetings, etc) then I won’t eat because it’s all “serve yourself” style. I would never get snacks from the office cafe or vending machines. Dinners are just my household, which is fine. Unless I have an evening work event - I won’t eat canapés, if it’s sharers/tapas then I’ll take a small amount but rarely eat it but don’t want my plate noticeably empty. If it’s a sit-down meal with personal meals/portions then I’ll have about half.
With wider family/friends, I am fine with sit-down meals and personal portions. Tapas style or sharers or family plates, I’ll take small amounts. I wouldn’t usually have starters or desserts - definitely not if everyone else isn’t.
None of this impacts DH at all. He does his own thing and I make the choices that work for me.
Someone also said that I’m making him eat whenever I’m hungry - that’s not the case. It’s the opposite. I don’t eat unless he’s hungry (which, luckily, is 99.9% of the time). As he’s a 6ft, 100kg rugby player, he eats fairly relentlessly.
I also don’t consider a 2yo and a 5yo having an ice cream as changing anything. If they were 15yo and 18yo then it might. I wouldn’t start eating at a 4th Birthday Party even though all the kids are eating.
I’m not underweight. I don’t think his intention was to make me eat more because, knowing me at all, he would know that I would eat it if others are eating and not on my own. It made me eat less.
I haven’t ever said he must eat even though he doesn’t want it or he’s not allowed to change his mind. I’ve just said that, if he’s changing something that he knows is material to my choice on what to order, that he lets me know that he’s changed his mind. For example, had I said to a friend “would you like to go to a Taylor Swift concert?” and they said “oh? Yes, go on then” and I say I’ll buy the tickets and then I change my mind, buy one ticket and then, on the day of the concert, tell my friend that I’m not going then I don’t think anyone would tell my friend to “only buy tickets to events you want to go to 🤷♀️” if she were upset. Ultimately, it was an activity that he suggested we do together that he knew I wouldn’t want to do alone, then he backed out of without telling me - leaving me to do it on my own when it was too late to cancel.