Well tempered clavier book 1, prelude 2

[Sekoul]

i just started bach's 2nd prelude in C minor. most of the pieces i play are much more advanced but i felt like it was time to tackle my weaknesses so i went bach a lil anywayz im actually having playing some of the notes together, any tips for this?
also, sometimes my middle finger has to press a white note between two blacks... and then i have to press one of those blacks... the problem is dat the middle finger touches the black note and makes it go down a little so by the time i play it after you almost can't hear it. i dont know if you understand me but are there any tips for this? my fingers arent very lean but i certainly wouldnt call them stubby ( my middle finger is 1.6 cm at the top of the fingernail

Thank you for your time!

[Tash]

hmmm well i played this piece last year and i can't remember having that specific problem- mine was more to do with speed...anyway my suggestion would be to play it slowly, with extreme awareness of not letting your middle finger touch the black key, i'm guessing that if that works then if you continue to play it slowly your finger should get used to where it's meant to be. also maybe try moving your fingers a little further down to the edge so there's some more space for your finger? hope that possible helps