MIL wants to stay after birth of child

In this situation, you can only try explaining your POV to your husband. Let him know you’re not trying to restrict your MIL access to visit baby and know that she meant well, just that it’s your first baby and you would like to get the say of deciding on what baby uses or what you want to do and not being restricted of everything. Tell him you want to prevent him from being sandwiched between his wife and mother, indirectly hinting him to get his mom to keep her advices to herself. If you tell him bluntly he might think you dislike his mom or something so try to sugar coat it. If all thing fails, tell him you would like to move back to your parents place for a period of time as you don’t want to risk having PPD over daily stress.