The trimming down was all part of the larger issue...yes, he'd trim down, he'd lose 50, 60, 70 pounds and he'd do it as badly a way as possible - quite quickly and by starving himself with little to no exercise. Most times, he would begin such an effort so that he peaked at or around his birthday. Then he'd "go off the rails" (words Adam used) celebrating his birthday, through "haunt season", Halloween and then through Thanksgiving and Christmas.
It would then start all over again.
Except this past year...he started to make an effort, found that is was just very difficult using his usual methods, and instead of learning new (proper) methods of losing weight, he decided to just throw in the towel. He went back to soda and desserts full time, and moved from one large meal a day (that we saw) to multiple meals a day. The results are seen in those screenshots.