How to deal with 4 month old sleep regression? Before this sleep regression set in, Bedtime is 8pm and I'll dream feed at 9.30pm. He will wake up again for feed at about 2am and around 6am. He used to be able to fall asleep in his cot by himself (with a night light in the room) or at most, with the use of a pacifier. Ever since about 1 week ago, he'll wake up shortly after putting him to sleep at bedtime and wake up many times throughout the night. Latching him to sleep, co-sleep, sleep nursing, pacifier, turning off the night light all doesn't work. I even tank him up with expressed bm, doesn't work too.