Brother remember and is did that many timers when we push hard offseason with slin and hgh we gain alot weight but most of it is glycogen and alot water retention and you will need to do a consolidation phase to give quality to this weight if not you will lose all on diet .
When we need to eat crazy amounts of food to gain more weight and dont even gain is because insulin sensitivity is very low and forcing it will add visceral fat and fat only . That´s why off days is good idea do keto and use berberine or metformin to help increase sensitivity