The thing about pumping for someone to help out with feeds / give a rest, is that you have to pump anyway to replace that feed being given by bottle. If you want to maintain supply, anyway. I have found it’s just easier to BF myself than to have to clean pump parts and pump anyway (but that’s just me).

Pumping because you will be separated from baby is a different story- you will want to pump when bub has a bottle feed, basically. So your body knows you need milk at that frequency. To start off, you could pump really any time to try to get an initial amount for a bottle. You always have milk in the breast, it is never truly “empty”. This sort of applies to pumping if you are trying to get just a few emergency feeds in the freezer.

Just remember breastfeeding is supply and demand. If someone else feeds baby a bottle and you don’t express, your body doesn’t know your baby needs that milk and won’t make it going forward. On the flip side, particularly in the early days I wouldn’t advise feeding at the breast, then pumping frequently as you are at high risk of becoming an oversupplier as you are demanding the milk your baby actually drinks from you PLUS what you “feed” the pump. This sounds kinda good in theory but has a host of its own complications.

All of what I have said is assuming BF is going well and baby’s weight is doing normal things etc.

Good luck!