Very Part Time Help Needed With Bubbly, Easy 3mo Old

Returning to work after having our 3rd baby. The older kids are both in school Mon, Weds, & Fri, so I'm trying to find someone who could watch just our son for short shifts on those days. He is the easiest baby I've ever had & I'll be sad to miss out on the time with him! I'm flexible on the possible schedule, but an ideal example would be something like 10a-1p on Mondays & Wednesdays. (Though I can work with anything that fits the school schedule 9a-3:30p on MWF). He naps every hour, so there's a lot of downtime & pay reflects that. Willing to negotiate a higher rate for someone who would be open to doing housework during his naps. I work from home in an office upstairs and would be present. We have no pets and do not smoke. This is an ideal job for a college student or someone wanting just a few hours/week in a low-stress setting!