To go along with what Velma said, if you have let down problems for the pump, try doing it while you’re feeding the baby at first. Keep in mind that 1-2 oz is really good in the beginning.
I tried Luvs diapers and didn’t like them. They smell really strong and I was constantly having to change the baby because they leaked out the top. (I was making sure everything was pointing down too.) Pampers aren’t bad, but we like Huggies best.