Removing the boobies

Okay I just found out I’m pregnant and I have a 1 year old who still drinking milk but I’m ready to get him off and get him sleeping through the night. My son is a taster so if he taste something nasty we will reject it I thought about putting some nasty multivitamin on my nipples and when he wants to nurse he’ll taste and it and not want it then offer the cup with milk He’s a very good eater so he won’t starve he doesn’t even need to nurse he does it for comfort.

I don’t want to seem extreme lol someone help