I week old puppy hasn't put any weight on. Eating well by bottle not by mother. What can I do

I'm not sure about what exactly you should do, but I would consult the vet to make sure there's nothing wrong with him, and continue to feed with the bottle so he gets his sustenance. Are you feeding him the proper formula?

Go to the library and look for books on breeding. You may or may not be able to find a vet over the weekend.

I hate to beat up on somebody that is part of coping with somebody else's mistakes, but week old puppies shouldn't be in the hands of those needing to ask basic questions. It is irresponsible to allow a female to bear a litter without educating yourself on their proper care.

i week old puppy hasn't put any weight on. eating well by bottle not by mother. what can i do
I would considering going to the vet and they may put her on some medications!