Help!!!! Ways on how to stop breastfeeding

Stephanie • Mother of two ages 5 and 11 months. Ive been married to my wonderful husband for 7 years. I`m all about family?
My son is 11 months and I think my good deed is now done. With school and my oldest son of 5 I'm so tried and just want to stop breastfeeding all together. Anyone have experience or know ways that I can break my son from my breast. I've tried a couple of times but failed, he's always crying for them and it's a Pain!!!! Do I just go cold turkey????