How do i remove excess vanish stain remover from fabric?

I picked my boyfriend up from football one day and he was bleeding quiet bad. We put him in the back and put his leg up on the seat whilst I whizzed to the hospital. Although I put towels and a blanket down, the blood still managed to sink into the car seats. I have used a load of vanish to remove the blood stain but now have far too much excess vanish on the seats. My car has water stains anyway due to the material of the seats, I was wondering if anyone had any ideas? I have tried hoovering and am going to try and soak it later on today.

Thanks in advance,

Hannah