Pumping/Bottle Questions

FTM here! I have a few questions!

My LO is 4 weeks old in a few days and we’re introducing a bottle so my husband can take over one night feeding. Can I sleep through the feeding without pumping if I pump right before bed? I don’t want my supply to drop.

Also, I want to build a freezer stash incase my supply drops when I go back to work. LO only nurses off one breast per feeding, so should I pump from the other breast after feeding him? Should I do this once a day or multiple times?

Any advice would be much appreciated!!!