1-3 Days A Week Recurring Babysitter/nanny Needed

Seeking a part time babysitter/nanny for 1 newborn (3 months old now) for between 1 to 3 days a week. I work from home in an office 5 days a week and my partner works home in the basement 3 days a week. Our grandparents are watching her a few days each week and are looking for someone to cover the days they cannot. We have 1 cat who is very sweet.