I'd go with baby. It was suggested I gave my baby 60mls but she only wanted 30 but they kept pushing. She got there a few weeks later and was gaining. Go with what your baby wants if they don't need as much you can give them less. If you want to breast feed it might be worth dropping a bit so they they're hungry for your milk. Formula last longer so they can easily go 4 hours but for breast it's anywhere from 30 minutes to 3 hours
Hi, congratulations on the birth of your little girl. Have you spoken to anyone from the infant feeding team they may be able to help with establishing breastfeeding and recommend amounts of formula. The more baby can latch to the breast the more your milk supply with grow. It’s recommended to breastfeed newborns 8-12 times a day. There is something called a supplemental nursing system which is a tube that can deliver formula to baby while they are latched to the breast which may help with supplementing but still stimulating your own milk supply There is the national breastfeeding helpline you can ring aswell if you want to ask any questions or feel you need more support 0300 100 0212
At the end of the day it’s a recommendation. Use your instinct but just ensure baby is getting enough. If you don’t feel it’s working for you then absolutely speak to the midwives, that’s what they’re there for, to support you!