help with v-jelq and foreskin!

[fidhell]

guys,im having some trouble doing v-jelqs due to my foreskin,and the difficulty of the exercise itself,what are my options,could i replace it with another exercise,since im trying to gain length would BTC stretch work?,suggestions are welcome
im currently in jp90 routine
thanks!

 

[DLD]

Trouble with too much or not enough foreskin?

 

[fidhell]

too much