My mil dont know how to tc of my 4weeks old baby. And insist she wanted to take care..

She shower my baby like rojak.. Pull one of his hand up and make him stand. When he is just 4 weeks old.. My baby cry very loud.. My husband dont allow me to hire nanny.. Maid.. Or helper.. And insist that his mum can take care.. And even i show him the video of how his mum shower my baby. He said.. Wash a few time will be fine.