One thing you dont wanna do is a complete 180 from what you were doing before. You need to figure out about how many calories you have been consuming, then try to lessen that by about 100 or so each week. If you have been consuming 3500 calories a day, you dont wanna just drop that in half, because your body will react very badly to that and your workouts will be crap. Make sure these calories are of nutritional value. Once you start working out regularly, you will lose weight even though you are still eating a similar amount of calories. I would continue to do at least 2 days of cardio in the morning and probably at least one day of cardio after a workout. But make sure that the day that you do cardio after a workout that its on a day where you lift with a smaller muscle group (Especially dont do this on leg days or even chest days, because those are the days that your muscles are worked the most).