He wants me to give blow job with no hands 😒

I know we try to adjust to what our partners like but he takes forever to cum and always wants a no hands blow job. I'll go along with it for a few minutes but it's just too much for the entire experience. I try and take breaks using my hands along with my mouth (cause sorry I'm not a porn star who can bob up and down mouth only for 15 minutes lol). Where is the line between what I'm comfy doing and frankly better at and what he communicates he likes?