Don't soak your hands in the bath for too long, usually your left hand is not so wet.

It is not advisable to grind your hands on purpose. There are no cocoons, you grind two.

1. Directly breaking the skin, it is a new tender skin, and the cocoon will be higher and lower in the future.

There are blisters on your hands, so you can either let them go away yourself, or the result will be more painful and broken.

You can press 4 5 6 strings more, which is thicker. Even if your hand has no cocoon, it won't be as sour as pressing 1 2 string.

If you are practicing chords, press C and E more.

You can play scales with strings above 4 5 6 (from empty strings to 12 frets and back to this cycle).