A very small fraction (<<1%) of the population has a genetic variant that may allow them to survive with less sleep according to Matthew Walker, who runs a center for sleep research at UC Berkeley. It is discussed in his book or you can watch him talk about it here: https://youtu.be/pwaWilO_Pig?t=5581

Wishing you the best in getting the benefits of less sleep without any health consequences. You might want to contact him to discuss.