Upto you. Im planning to give till 1.5 yrs.

ye padlo

https://www.babychakra.com/learn/4435-c-section-ke-baad-prasav-maalish-ki-sanstuti

Agree with Neha.. I stopped after 2 years but sometimes still give..

Till the age you want to give him a massage. No such hard and fast rule. I stopped massaging my child at 10 months and she is perfectly fine