So I've been getting into 5* maps and when I play jumpy marathons, my middle finger (z), which is my main tap finger btw, tires out easily. This is different with my supporting tap finger tho, index finger (x), not only it does not tire out easily but is also faster than my main tap finger entirely. The only thing I need to practice with this is streaming which is the case I'm not used to in this tap finger. Also, I think its fun to learn alternating too since I heard that it provides better stamina that makes higher bpm easy and I'm just gonna learn a second main tap finger anyway so... is this a good idea? If so, what star diff range should I practice these on?