Providing you allow baby to BF before FF you shouldn’t have any BF problems. I now have given my NB 3 FF bottles since her birth. I found myself low on Bmilk when I got the flu. Its a god send to have a backup especially when you not 100% yourself. Also prevented a starving crying baby...

If and when you need to FF, don’t beat yourself up over it.

The tip I would pass on is use HA Formula as it digests the same pace as breast milk.

K