8.5 month old is only eating 12-14 oz of milk/day...should I cut out some solids?!?

Of course she isn't hungry after she's finished an 8 ounce bottle. That's a VERY large bottle for a baby of any age. But, very likely, she will be hungry again a few hours later -- which means you feed her a few hours later.

(And yeah, as others have said, more and smaller bottles will probably make more sense than 3 or 4 huge ones. If you had been able to breastfeed, she'd probably still be nursing about every 3 hours during the day and evening, and maybe once or twice at night (6-8 feeds in 24 hours, not 3) -- but not taking anywhere near 8 ounces at at time.

Your child is making it 'seem' like it isn't enough because it really ISN'T enough. Her main source of nutrition at this age is formula, not solids. Basically the cereal and jars of baby food barely count, if at all.

Instead of trying to get as much formula as possible in each bottle, I would offer at least 1-2 more bottles during the day. For instance my youngest usually wanted five 5oz bottles a day at this age, and my oldest liked four to five 6oz bottles a day. Actually both a little on the low side of the normal range, but it was the amount that THEY were happy with, and that's what's important.

Both were eating solids by this age (my oldest more eagerly than my youngest) but I never expected them to get much out of it except play and practice until they were around 12 months old. Edit: I find it extremely odd that in a question that is specifically about whether your daughter is getting enough food, you'd somehow 'forget' to include night time feeds. Seems to me like you're changing your story because of sheer defensiveness.

Anybody knows that '3 bottles per day' means 3 bottles in 24 hours, not 3 bottles while the sun is up. Listen, we're genuinely trying to help you here. We can't do that if you leave out (or make up) information.

This isn't about calling you a bad mum, it's about simply answering the question you asked, because obviously you want what is best for your child and you need a bit more information to provide what she needs. So cut the defensiveness. It's not needed and it's not helpful.