brain side does not matter. cause there is no differences in brain sides.
its just virtually put.
everything that is able to do with the left hemisphere can be done with the right and vise verca.
you also won't even need a complete half of your brain. but it will be not running in full power when deactivating one half of it.
but its part of how dolphins are used to sleep. they shut off one side of the brain and let the other running. switching sides the next time when rest.
works quite well. but will take a lot of practice through meditation to achieve this abilty.

good luck everyone!!!