My 4 month old (19 weeks) went through a phase of being an awful napper (he does suffer with reflux but is on medication so I initially put it down to that) then last week all of sudden he started doing an 1.5 hour nap sometimes longer in the morning and then sometimes another long one at lunch time. He would usually wake up around after 30- 40 mins but settle himself back to sleep.This lasted a week then this week its just gone really downhill again. His naps have sometimes been as awful as 20 mins he often wakes up crying and has been really fighting to go down for a nap. Last night I thought perhaps this was a sign of sleep regression so I thought let me see if I leave him and just soothe him every few minutes he might give up and settle down. After 25 minutes of him screaming crying and me cuddling him a couple of time and shuss patting him at regular intervals he did then go to sleep although it seemed more out of exhaustion from his lack of sleep and crying more than anything. Im finding it hard to know between teething, reflux and regression what is the right thing to do and why he was settling himself well between naps and all of a sudden he's gone downhill again? Anyone experienced similar issues?