Questions about poly phasic sleep from a teenager

Hi I'm 17 years old and I am in my last year in high school and I want to try polyphasic sleeping to have more time in my day but I heard that people struggle their first week and the problem is I have to go to school and study so will this affect my concentration and what about my grouth will it affect it and what type of poly polyphasic sleep do you suggest I try out thanks