I put my baby on teat 2 at 2 days old for the first few weeks I pace fed him until he got use to the speed if you google pace feeding it shows you how to do it if you don’t know what to do x
I would personally go back to 1 and take little breaks or even 0 as you don’t want her tongue to get lazy from the flow of the teat
Similar thing happened with my LO - we stuck with the quicker teat and pace fed to help him get used to it. It’s now much better!