If I dry my breast milk supply purposely

Will I be able to produce milk for my next baby ? I'm having back to back pregnancies I had a baby this year in april and will be having another next april . Unfortunatley , I only got to breast feed my daughter for a couple of months . Lately I just pump once a day and only get 2 oz at the most. My baby drinks formula all day and for the past few days I noticed my milk isn't " sweet anymore " it like has no flavor. The first day it didn't taste good at all! I've decided that I don't want to be producing milk anymore until the next baby is born. My grandma said she knows a way but she doesn't want to because maybe for the next baby I won't have anything if I stop it purposely.  What do you ladies think ? And what are safe ways to dry your milk ? My boobs get engorged to only have 2 oz 😒 I feel like not pumping at all and see what happens but at the same time i'm sure we all know how painful it is to be engorged 

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