Nanny Needed For My Children - Full-time / Part-time

I'm looking for a fill-in nanny to watch my 4 yo son on my work days. I'm an RN and work 7 am-7 pm, so would need you starting at 6 a.m. until roughly 8:30 p.m. Preferably at my home, but may consider yours if the right situation. I have a full time nanny currently, but need a backup for when she can't watch him. I only work Fridays and Saturdays. Please reach out if interested!