Worried mom

Sanny

My baby is 4 n half month old and still he doesn’t have good neck hold.. his head is always tilted to front... n he hardly did 2-3 times roll over till now...

Am seeing other babies are able to sit on their own from 5 months only...

im worried why is my baby not reaching his milestones??? Should I consult his dr???

His birth weight was 6.17 lb n he is currently 15.8 lb