Should I give the caregiver some pocket money?

My mother is currently hospitalized in a ward with a caregiver.
Some people in their 40s and 50s around me are telling me to give the caregiver a little pocket money.
The caregiving fees are already included in the hospital bills,
and I provide meals or snacks every 2-3 days
(a variety of things like sushi, rice cakes, desserts, etc.).
But they are telling me to either give them 20,000–30,000 KRW frequently
or at least 50,000 KRW once a week.
I visit unexpectedly every single day,
and they are always doing a great job.
The nurses also tell me not to worry because they are looking after her like family.
I express my gratitude to the caregiver every time I see them,
but the nurses say they are just doing their jobs for a salary, so I don't need to go overboard ㅠㅠ
Should I give them pocket money?