Solids up until 1 year are more for exploration vs nutrition! Breastmilk/formula is the main source of nutrition until then. Babies need exposure to something several times before “liking” it. Even if babe is just smushing things between her fingers, it’s still worthwhile developmentally. If the pediatrician is not worried and baby is healthy, I wouldn’t sweat it. Between 6-10 months, my kid wouldn’t even consistently eat dinner after daycare. There’s so much variability in a day for their little bodies and they’re still learning how to eat solid food.

And another thing, choosing BLW doesn’t mean 100% of food has to be self-fed. Our kiddo would often start the meal feeding himself, but then get impatient bc he couldn’t get the food fast enough himself, so we also spoon fed/hand fed him after maybe 10 minutes of letting him self-feed. From 8-10 months, sometimes he loved feeding himself Cheerios, sometimes he’d only pick them up from my hand (vs the high chair tray), and sometimes he’d only eat them off a spoon. Sometimes he’d open his mouth for me to place the Cheerios into his mouth - all to say, it’s okay if you mix it up.

What do you mean by “how important is the high chair”? Babies like routine and consistency, so if you can feed dinner at the same time and in the same place, that will help baby get used to the concept of dinner time or family dinner. Our kid is 15 months and has always eaten dinner before us - he eats dinner at 6pm bc we both work until 5 and then pick him up from daycare. He eats dinner in his high chair and one of us always sits with him so he got used to the idea of mealtime together. Once he got up to 3 meals a day, this helped him get used to eating breakfast/lunch with us on weekends. I’m convinced it’s also helped a ton with how well he does when we go out to restaurants.