i have been playing osu for around 100 hours and i play 6 star maps to 7 star maps. but now i have started to realize that when i alternate i cant keep the rythm, and i for some reason stretch out my fingers when i come to hard parts of the maps. so i want to start tapping becouse i feel i can read better. But becouse i have alternate since i started playing I HAVE NO STAMINA!! how do i train stamina