pinkDior, I dont have a maid but my cousin employs one to tc her son and she shared her feelings with us before. She said her son is very attached to the maid but there is nth much they can do expect to spend more time with her son whenever they could. And she feels lucky that her son loves the maid cause this means that the maid is taking care of him well and love him as much.
Unless you are willing/able to be a stay at home mum to take care of your son on your own, if not, the results is still the same. If you ask your mother in law/Mum to tc of him, he will be close to them. End of the day, he will still rmb you as his mother. =)