Hi!Im not sure if im much help,i have a 5 month old so am new to all this too but i do remember she did do this at about 3 months,just when i thought she may have less sleeps she was having more like she slept 10- 12 hours in one go at night and then like another 5 in the day!She has only just started stopping this now,but saying that some days she still is a big sleepy head and has about that!I also was worried about the amount of feeds but it didnt last long and she is still gaining weight etc.Just when you think you have them all worked out they change hey!