I've got a regular partner that had a child 2 years ago and his time is really limited. Currently, he plays me every week and that's it. I play him and 2-3 others every week and maybe a league match or two. Obviously, I'm more practiced than he is.
We used to go about 50/50 on who would win and it was usually tight. Now, it's around 2&3 when we play all out and he can barely survive. He's totally accepting of it. Frankly, it's his free time to excercise and he's just happy to be on the court.