FTM, Baby and supply concern

So my LO is now 14 weeks (3 months and a week)

He eats evey hour. He use to eat every two, but he's been eating every hour for at least the last month. I talked to my lactation nurse but I don't think I explained myself very well. I have him feed on one boob on one feeding, and the other boob on the next feeding. And he's got a great latch and will feed for 10 or more minutes usually.

And I'm not sure if I have a low supply or what cause I can pump and hand express while pumping and get about 4 ounces, if that boob hasn't been fed from in the last two hours. But I know that a babys way of feeding and pumping is different.

Anybody, got a clue?