Consistency is everything in care. Fill in the schedule, and get a simple form your caregiver signs to commit to it, and to agree how they'll let you know if something ever comes up.
From your job
A couple of choices
If they can't make a shift, how much notice?
Include a blank weekly availability grid?
Updates as you go. Edit any wording before printing.
This is a plain-language form, not a rigid contract. Life happens, the point is a shared understanding about the schedule and how to communicate. Keep it kind and flexible.