My lo is 7 weeks old hes formula fed and for the past two days hes been taking 4 oz after every two hours during the day but slept 4 hours straight last night and today he took 4 oz every two hours he didnt spit up or anything but been fussy and passing alot of gas didnt sleep properly since 5 pm and its 2 am now hes still up though i can see hes really sleepy and isnt sleeing taking 5 min naps is 4 oz too much for him ???