My lo's drinking seems to have slowed down lately. She is 9 weeks old and has been stuck on 4 oz for weeks. She use to feed every 3 hours but now sometimes sleeps for 5 at night and is still only taking 4 oz. Yesterday she had about 28 oz in total as sometimes she doesn't even finish the bottle. If I try to give her 5 oz she normally stops after 4 or will throw some of it up. She's a good weight, 11lb when she was weighed 2 weeks ago, and she seems to still be putting on weight so I'm not too concerned. I'd just like to know if this is a normal amount for a 9 week old to drink and when can I expect her to increase how much she takes?