Just swap to cows milk. You can do it gradually or just go for it. No need to change formula numbers.
We had our 11month HV appointment last week. She suggested full fat milk after a year old but switch slowly as more gentle on their tummys. So 6oz formula amd 2 oz cows milk then and so on until uve made the switch.x
My 3yo didn’t like the straight switch so we did gradual and onto almond milk as cows seem to mess with his belly (no allergies or anything)
I just stopped it and went straight to cows milk and she is perfectly fine xx