There may be periods when you are not required to provide first aid for a couple of months, whilst there may be other periods when you are providing support every couple of weeks.
Efallai y bydd adegau pan nad oes angen i chi ddarparu cymorth cyntaf am ychydig fisoedd, ond gall fod cyfnodau eraill pan fyddwch yn darparu cymorth bob ychydig wythnosau.