If you lost 2 lbs of muscle in a month then 250/day is required just to stop that. You will need to double that at least in order to start to gain again. Start with 500 more than your currently eating plus enough to replace the exercise you do. I would call that your maintenance level. Eat 500 more than that on your workout days and on the weekends eat 500 less than that. Assuming your workout consumes 5000 calories, that will work out to 3500 on workout days, 3000 on non workout days and 2000 on the weekends.
Keep your protein and fat constant, vary the carbs to account for the difference. For example, the 2000 calorie day should be 8000 calories from protein, 800 calories from fat and 400 calories from carbs (fruit and veg only). During the week add a bowl of oatmeal for breakfast, 1 cup brown rice at 2 meals, sugar or maltodextrin in your post workout drink, sweet potatoes with 2 meals, etc.
Question, why is it 2000 calories on the weekend?
I plan on working out 5 days a week so I think it'd work out something like this according to your plan:
Monday - Workout = 3500
Tuesday - Rest = 3000
Wednesday - Workout = 3500
Thursday - Workout = 3500
Friday - Rest = 3000
Saturday - Workout = 3500
Sunday - Workout = 3500