Can you tell me how i could lose 50 pounds in 2-3 months?

This would be a: very unhealthy rate of loss and an unrealistic goal. Please rethink this for the sake of your health. Take care.

Not really possible: This is way too ambitious and not safe. A very ggressive weight loss could be considered 2 lbs per week - 24 lbs in 3 months. A more modest approach might be to lose half of that. 50 lbs in 3 months 200 calories/day or running at a fast jog for 3 hours each day for the entire 3 months. Not realistic.