Breast to Formula

Hey Friends, I need some advice.

We are considering switching over to formula for a lot of our own personal reasons.

My first was EBF so I have NO idea what I’m doing.

He is 6 weeks.. how often would I be feeding and how much?

How much formula do you buy at a time? We are thinking about buying a bulk container from Sam’s.

Also, if you have done this- how do this impact digestion and diapers? Do they poop more or less often on formula??

Any tips at all would be welcomed.