how to wean a 7 month old

🐘🐘🐘 • 👧🏼 born 1/19/16. 👼🏼 lost 9/15/17. 👼🏼 lost 11/26/17.
I have been diagnosed with hemiplegic migraines (half of my face goes numb/paralyzed). I may have to wean my daughter in order to start treatment. I'm hoping I won't but it is a real possibility. 
My daughter literally pulls at my boobs when she's hungry, how would I wean her?