Breast pumping ... milk finally came in so I plan on formula feeding during the day and giving him…

Why don't you nurse and pump? Your breasts constantly produce milk so it's not like you're draining them when you pump.

So are you not going to nurse or pump at night?

If that's the case you're going to lose your supply

I would of nursed also but my son doesn’t take to it. And I was concerned that he wasn’t eating so my doctor told me that as long as I choose to introduce breast milk to him it should be alright

I do plan on pumping at night also when he falls asleep

So if you pump at night then why give formula in the day? You'll have milk that you pumped at night to give to him during the day.

Because he eats more than I can pump at once right now. If I begin to pump what he eats normally I will just pump only but for now so that he can gain weight I will continue to do both

I see. Kudos for being dedicated