In order to get the tamed Gatcha to drop loot crystals make sure you have owl pellets and stone in its inventory. 1 owl pellet + 20 stone per loot crystal. If you have tamed snow owls just park them near the gatcha and the gatcha will pick up the pellets automatically.
CRAZY GOOD organic poly hack: Find one that can make organic polymer.. Keep it separate from others and store unopened crystals in a bin, no spoil timer! You can keep hundreds on hand at all times. Updog so others can see
When raising a baby gacha, fill their inventory with stacks rare mushrooms. They don't prefer them over other foods, but they will eat them if they have to and each mushroom regains alot of food. This will keep them from starving. This is really easy on aberration. They will still drain your berry troughs, but this will give you peace of mind when you've got other things to do. "UP" if this helps at all.