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

We live in Westport, CT and are looking for a part time help for the family. 20-25 hours a week, Mon to Friday with at least 4 hours every day. Help needed would be - light housekeeping - laundry - taking care of the dog (11 lbs) - some meal prep and running errands (like groceries). All of these don't need to be done everyday (except managing with the dog). Looking for someone to start as early as next week. Some flexibility on timings on certain days will be appreciated. Thanks!