SOS May need milk for a new Labrador mother around May14 -19 (Dewey)

Vet.
stated after looking at her ultra sound on Friday April 19th that my Labrador is going to deliver over 12 puppies around I figure May 16 - 19.
I am in need of a new female mother that can feed maybe a few extra puppies if she delivers around the time stated above.
I have a golden mature Labrador this is her first time of being a mom and she is 4 1/2 yrs.
old.
Please, let me hear from you if you can help my situation out.
I hope I am starting early enough asking for help feeding a few more puppies if someone has a new littler of puppies in their home also in May which the Vet says my Labrador will be delivering her littler also.
Please first email me through craigslist.
Thank you very much.