Well if he doesn't pretend to not be at home and he'll think there is no food and he will eat
no because it is old enough to eat puppy food. so giving the puppy milk is unnecessary for it.
feed it and find out
That depends. What are you feeding him/her? If you are giving him puppy food he should be eating. If he isn't, take him to the vet.
a puppy age is week old
A four week old puppy should be gradually weaning from his mothers milk. Encourage him to eat two sachets of puppy meat a day and maybe some dry kibble too if you want to add that.
. Get your puppy to the vet.
Yes you can its just that they will be clicking their tongues and probably want more!!
A two week old puppy is blind but when its eyes open it can see.
The puppy can get sick.
Yes.
If the puppy is 4 weeks old or older soak some dry puppy food in water loosen up with a fork and he/she should eat it and about 2 week all teeth in they should eat the food dry good.
you should test different types of food and find out which one he/she likes best.