My daughter does the same exact thing. It sucks so much! Just pulling myself out of bed for the umpteenth time takes more energy than I have (quite literally)
. I was advised on these boards to stick to one thing only, rather than trying multiple methods. Since my Taylor was clearly hungrey when she woke (usually around three) I fed her, but have just stoppd - much like you - in hopes that her body will train itself to eat those calories during the day. It works on me, too! I found that if I get in the habit of eating a granola bar or two after settling Taylor at 3 AM, I start needing the granola bar. If I eliminate food in the middle of the night, I still get hungrey for it but after a couple days I do not. I assume it works the same way with babies. But if your son is only 9 weeks it is quite possible that he could need that food. Babies under 3 months often need to feed in the middle of the night - and obviously Alex is a good eater (if you express 5 oz in one sitting, he is actually eating
more than that from your breast by an ounce or two, so that's great) and since breastmilk is so easily metabolized then it may not be that he's only waking out of habit. I suggest that if he still cries for a feeding after you've eliminated it for a couple nights, feed him. If you're fortunate to have such a healthy, thriving baby you may be unfortunate to have to feed him once during the night. But I assure you it will not be necessary by at most 5 months, as I am sure my 6 month old is waking because she's accustomed to it.
The bigger issue, however, is waking up every hour after the initial waking. It's like all bets are off! My solution with Taylor is to wean her from her paci. There's more info about that on the "props" board.
Hope I was somewhat helpful!