>is there a way to make splits without foragers? just so the foragers go back to their old hive...
There are ways to maximize young bees in a split, but the simplest is to shake in extra bees. Other methods are to take open brood and put it above an excluder. The bees will move to it, leaving the queen behind. You take those frames which should be almost all young bees, and put them in the split. But I don't see that works much better than using open brood in the first place and shaking in extra bees from brood combs...