GER in 1 year old. With my babies g.

Hello docs.... My baby is 14 months old...When he was new born he had severe reflux issue and drs said it is normal in babies as they have underdeveloped digestive system. .. And by the age of 6 7 months he was okay and no reflux was there... But now from last one month  i mean after 13 month he is again having same issues ... Cries inconsolably mostly at ngt.... Stops eating anything.... His reflux had completely stopped after he was 7 months but from 13 month it again started..though he doesn't throw up...but I cn see he has more burps and brings something to his mouth and again swallows it back...making weird face... I cn feel.he brings some acid back... his weight is 8.5kg...birth weight 2.5kg... I had heard that ger gets subsided after babys first brthday but my baby has it again... I want to know when will my baby outgrow this problem... Do some babies need much time for outgrowing this issue... I am worried...is there any problem with my babies G.I Tract. Plzz help me...