What should I do when playing 2s with my weaker friend?

Hi guys, I'm a C1-2, I've been playing with an IRL friend for years, but he unfortunately doesn't seem capable of improving his mechanics. We usually sit around D2 and he has never played solo so it's hard to tell, but I don't think he would get past Plat 1-2.

We were brainstorming ideas yesterday, our biggest problem is the difference in playing speed between us, we are always way too far from each other, we leave huge spaces every single play. What would you guys recommend I do? We have fun playing so we wanna continue but it gets pretty stressful at times. A bit more info of what he can't and can do:

Pros

• Good rotation
• Doesn't ballchase
• Can pull off some good clears and shots occasionally

Cons

• More often than not rolls the ball back slowly to the opponents when shooting/clearing
• Unpredictable whiffs/backward touches
• No fast aerials and other basic mechanics
• Very slow recovery