Hello Rahul I think u live in Delhi. Because every vet in delhi suggest cerelac for puppy.
I am also live in delhi and I have a black lab 6 month old now, when he is 45 days old my vet recommended cerelac because I also live in delhi.
But when you search on Internet everyone against cerelac because its a baby food not puppy food. Dog needs lots of protein not grain.
First you need to know every puppy must be 45 days old, It is the right time to buy a puppy. He is so young Please give him goat milk or Royal Canin baby milk.
Please don't gave him a single drop of simple milk because cow and buffalo milk contain lactose.Well, lactose is actually a kind of sugar. Not just one single sugar, but two sugar molecules chemically linked together.
In order for a puppy to digest milk, the lactose must first be broken apart into its two more basic, easy-to-absorb sugars.
We all know that puppy digestive system is amature & they can not digest such things.
I know Royal Canin puppy milk is too costly try goat milk which contain small amount of lactose.
Also try Royal canin maxi starter or drools puppy food