my 4 month old baby is not sleeping he is always playing and waking up for every 20 mins

A. The child is waking up every 20 minutes and maybe the child is not getting a comfortable position to sleep so make your child sleep sideways and keep patting the child till the time the child doesn’t get into deep sleep and make sure to feed the child well enough and the child well before you put your child to sleep also put cotton or earplugs to avoid disturbance to the child as sometimes kids are light sleepers