In this guide, you will get to know how to get BERRIES from a BERRY TREE in Pokemon Sword & Shield.
First of all, you have to go to the Berry Tree and start shaking it up. When the Pokemon is drop on you, and want to fight you, then you will lose all your berries.
You will find that the tree shakes for 2 to 3 seconds and your controller will also vibrate with that.
If it becomes too frequent, it means that a Pokemon is about to jump out of the tree and eat all your berries. At this point, you will have to leave the tree and grab all the berries.