my son is same age -4.5mths. He has been waking every hour in the last 2 weeks - b4 that he was up 3 times - he is breastfed. last night was only 2 times....felt like i won lotto today....but sounds perfectly normal to me hon....i would expect to be getting up to a breastfed 4.5mth old bub at least 3 times a night.....