So far, LO has been doing a great job breastfeeding but Im still needing to supplement with Formula.
He was fed enfamil newborn at the hospital, and has been taking the breast and then the enfamil newborn as needed.
We are now out of our first can. We have several other brands that came free in the mail. Should i switch and use the free stuff or buy another can of enfamil.

Are there any pros/cons to switching?
What about costco formula? Any experience with this?
Ideally we are hoping my supply increases so he can be EBF but in the meantime we need to make sure he gets enough nutrition.

Thanks.