Do you wake your toddler on the weekends?

My 15 month old is a great sleeper. Lately she's been sleeping more and I've needed to wake her up during the work week. But on the weekends I don't know what to do. Do I let her sleep until she wakes on her own? Do I cap it at some point? She goes to bed at 7:30 p.m. During the work week I wake her up at 6:45, and on the weekends I've been waking her up at 7:15. I'm worried if I let her sleep in much longer, her whole routine will be thrown off.

She takes one nap a day after lunch, usually sleeps from 12-1:30, 2:00. 99% of the time she wakes up on her own for naps, but I cap them at 2:30 p.m.