Taking any ideas or advice!

My very opinionated 18 month old decided a couple days ago that she will NOT sit in the high chair for meals. She eats three meals a day at home so this is a major problem! I think it may have started with a bad teething diaper rash but that’s fine now.

I’ve been trying to just put the straps on and let her work it out but she’s a kid who will just scream and scream. However I really don’t want to cave and let her eat on my lap or standing up as I’m afraid we’ll be stuck with it, and we tried a regular chair yesterday but it’s too messy, she doesn’t sit still, etc. I SAH and solo a lot so I feel like giving up the high chair is a big mistake but endless screaming during meals is wearing me down fast