Feeding dispute

So majority of the time, I feed Adalynn 6oz of formula about 4 times a day. Lately, I've been giving her 8 oz here and there, but definitely not every feeding. And she eats it all, with no issues. She's been struggling with her naps lately, so I decided to give her a 8 oz. To see if it helps. It doesn't but I figured it was worth a shot. Again, she has eaten all 8 oz with no issues.

Except my husband seems to think it's too much. And that "she falls asleep for him every time he gives her 6 oz." That's a lie because I usually give her 6 oz. And I'm home with her alll the time!

The recommendations our Ped. Gave us is 6-9 months-- 6-8 oz. And 9-12 months--6-8 oz. We've been giving her 6 oz since December...in my head, 8 oz for a 9 month old is just fine. But hes losing his mind over it.

Now we arent speaking.

Help. Am I over feeding her? She's 50th percentile and perfectly healthy and happy....just refusing naps.