How much to eat?

WITH OUT THE LOOOONG STORY, I NEED TO GET OFF THE FED'S MED'S. WHAT I MEEN IS I TAKE 60MG OXY BUT WOULD LIKE TO USE THE 420 WAY. SO I CANT SMOKE, VAPOR, ONLY EAT THE WEED LIKE BUTTER, BAKED GOODS, ANY IDEAS LET ME KNOW PLEASE !!!:peace: