How long should my boyfriend stop pleasuring himself for before we get to see each other? NSFW?

I’m in a long-distance relationship, we love to have sex when we get to see each other, and my boyfriend masturbates a lot since he doesn’t get to see me often.
I will see him in a week and I want to make the first time we have sex really amazing, so I got the idea to have him hold off on masturbating until he gets to see me, but how long should I have him hold off for?