Feeding schedule and sleeping question?

My 7 week old had been going for a week or so eating 5-6oz every 4 hrs. 7, 11, 3, 7.  Then a midnight(ish) feed and a 3:30am that started stetching to 4:45.  I was trying to wean that 4:45am to just a couple of oz since he eats at 7am. The one time I gave him a full bottle he almost completely refused his breakfast bottle.  Well last night was just a total disaster.  Waking every 2.5 hrs or so...sometimes wanted a bottle, sometimes not.  I don't mind a feed at night but trying to eliminate at least one.  Today, I'm reverting back to eating every 3 hours and he seems to be taking as much.  What are my chances that the extra oz during the day will have him sleeping better at night?