Whats the most weight i can lose in 2 months safely?

I am 218 pounds, 5'6" 22 year old man. I would like to know how much weight I can safely lose in 2 months. In my senior year of highschool, (4 years ago now) I was 180 pounds, ideally I want to be thinner than that even. I broke my back in January and have since lost 30 pounds just because I don't have an appetite any more. I figured if I was losing weight, why not get serious about it.