Hey guys new to the forums to dont know if this is the right place to post, if not it can be moved and sorry in advance.

My issue is simple. Im currently trying to build and get bigger now that its winter here in Australia, but i have noticed that my body is looking leaner and im fitting into my old pairs of jeans much better. I couldnt do this a few months ago. I guess im just asking why could this be?? Im eating 5 meals a day, putting in at least 2000-2500 calories a day so i dont think its my actual meals. The only difference is ive been spreading them out to every 2.5-3 hours where as before i was bumming around sleeping all day, waking up late then try to force all these meals into my day so every 1.5-2 hours. Is it because of this change (which ive been doing for a month now) that my metabolism has increased therefore burning and making me look leaner? Just concerned because this is ment to be my building period but i actually look at feel skinner than i did 3 months ago