How often does your 6.5 month old eat?

And how much? While I’m at work (around 10 hours) he eats three times about 5 ounces each. So he’s eating about every 3 hours with sometimes a 4 hour stretch depending on his naps. Sometimes my MIL who watches him says he will take a 7 ounce bottle. Is that too much? She says she is pace feeding but I’ve never actually seen her give him a bottle to make sure she’s doing it right.