Suggest Treatment For Slipped Disc

I am 29 years old female and I have recently been diagnosed with slip disc at an initial stage. Doctor has prescribed 3 weeks of bed rest and some medication. I have started gaining weight because of just bed rest and eating for ao many days. I want to lose weight and at the same time I want to recovery at the earliest. Kindly let me know what are the ways for quick results for both my concerns. Regards