For the gatorade, try drinking it half strength during the workout. Also, even though you sweat a ton, there is usually no reason to drink gatorade for less than an hour unless it's really hot, or you have another workout planned for later in the day. You'll get enough simple carbs from your post workout drink or the skim milk if you have if within half an hour of the workout. It will take you a few months to reduce it and feel ok during workouts, hence the idea of diluting it.

I'd also recommend you ditch the skim milk as a snack, Again, it's about trying to reduce your simple sugars during the day apart from 1-2 bits of fruit and the recovery drinks.

I'd recommend water or almond milk as lower sugar content, but skim milk or soy are ok for after workouts.