The speed and intensity from her working herself up to orgasm, plus the less intense stimulation of the forward and backward motion, makes it easy for you to get to that 9.
Multiple Orgasms During Sex for Men (Positions, Techniques, & More)
Another option, which is easier and gives her the pleasure of watching you writhe around, is for her to use oral to get you up to a 9.
After plenty of research and practice, I got it down to a science.
One thing that can help of control over your motionCreates more friction against the head grip left to an inverted one right. Makes her tighterGives you plenty is if she flips her grip from the typical masturbation of your penis degree angles Is comfortable.