Hes 4 weeks old, im considering it only he will go 3 hours easy in the day but night time i feed a DF at 10pm and he will wake at 12am and then 2am, 4am.. i have tryed to get him back to sleep but seems only satisfied if i feed him. Ive also tryed to give more milk in the day but he will only take 4oz each feed, i do cluster and a DF. so i thought maybe a hungrier baby milk might satisfe him at night time?