Formula fed newborns - How many oz is your newborn taking a day?

How much formula does your newborn drink and how often?

Also how much weight did your baby gain between their 3 day weigh in and 10 day weigh in?

My 10 day old was weighed today and she has only gained 30g in 7 days.

They've said this is a lot lower than they would like as it should be around 30gs per day!

My little girl usually has 2oz of formula every 3 hours.

She weighed 8lb 7oz when born

Day 3 she weighed 7lb 15oz

And today (day 10) she weighs 8lbs 0.25oz

I'm really worried as she isn't gaining how I thought she was.

She has plenty of wet nappies and seems alert and okay.