Will giving my BF baby mess up latching?

If your baby already has a good latch they should be fine. I waited til about 2 weeks with my first child and 4 weeks with my 2nd to give them a pacifier and it didn't affect their latch.

I give my EBF baby a paci when we’re on the go, like car seat or pram, and he’s had his full and he’s tired, I put a paci in and in 5-10mins he’s asleep then I pull it out. Won’t affect latch. He only used it as a sleep aid so awake and playing there was never a paci in his mouth only when I needed him to nod off when we’re on the go then I’ll use it. In my second pic we’re at the PAX cosplay convention and I used a paci to get him to nod off

The latch won’t be affected but the suction will if you don’t control the flow and do more bottle than breast- I know because I’m in that situation since I worked full time. I still nurse and we are about to wean off since she is almost a year old