Does anyone else’s 15 weeker not drink more than 3oz most feeds? 😐

Does anyone else’s 15 week bab not drink more than 3oz most feeds? 🤔🤔

I feel like an awful mum because she doesn’t want a lot of milk but there’s nothing I can do 🙁 she feels like she’s getting heavier but I haven’t weighed her in a while 🙁 I just don’t want her to be losing weight 😕 I feed her every 1.5-2hours to make sure she’s still feeding 😊

She’s formula fed.

She was 9lbs 6 at 6 weeks and 9lbs 12oz at 7 weeks in the 25th centile. Her paediatrician said she was in the lower end. Does any of that actually mean anything? Was she putting on weight quick enough? 😳 idk, I’m a first time mum 🤷🏻‍♀️