Is there some sort of baby nutrition triangle that we should be following?
Our schedule in general...
morning, 8-ish: fruit or blend of with oatmeal (2 containers - gerber step two); most of 4oz bottle
noon-ish: meat and rice or noodle blend (1 container), veggies (1 container); most of 4oz bottle
dinner is usually around 6:30: same as lunch, sometimes we add a fruit for dessert.
2 or 3 AM: 6oz bottle
No teeth yet, so we're slowly working in baked potato, bananas, etc. in larger chunks. He snacks in between too and he's been using a sippy cup of water as he pleases. He's really liking the puffs but he's having a really hard time with the yogurt bites. I guess just like the baby food, he'll get used to the texture and swallowing. Poor kid loves food, but can't keep from gagging

I also feel like this kid should be a big-fat-fatty with all we feed him, but he's skinny as a rail. Are you guys doing something similar? I couldn't BF so I'm in a totally different boat from all my local mommy friends.
Re: food, formula, nutrition?
I make her food in the processor from plain steamed food or our meals and keep them in4 oz containers.
My LO is a little one with a tiny stomach. When I gave him 4oz bottles he'd spit up at least an ounce....so now he's back to 3oz bottles. He gets 5 3oz bottles and about 1-1.5 jars stage 2 foods plus cereal to thicken per day, and he nurses the early morning feeding and when he's hungry and I don't have ability to pump.
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We're doing BLW. I try to mix it up for DD when I can so she gets a variety. As to the amount sometimes it is an amount of food the size of her fist and sometimes a little more. I don't worry at all about the size of my baby anymore. She's pretty tall and heavy though.
ETA: she eats two to three meals a day but no solids snacks. I nurse on demand and its often!
DD pretty much gets 3 solid meals a day, whatever we are eating usually (chunks of food, not purees), plus the same 30 oz of formula she's always taken (at 4 or 5 oz at a time...she's always eating!).
The BLW book has a lot of great info about how babies bodies know what they need at this age and you can really let them dictate.