Hi
As always, "best" is a personal choice. I prefer picnics. Even in non-pandemic times, queuing up with other people & waiting to get food is not a good use of my time. You can purchase picnic foods (for any or all meals) at a big grocery store in South Lake Tahoe so you'll be well stocked when you arrive.
If you want to queue up for food, read more about dining options on the TravelYosemite (concessionaire) website and the current Yosemite Guide newspaper. Check when it gets closer to your trip.
https://www.travelyosemite.com/dining/yosemite-dining-experience/
https://www.nps.gov/yose/planyourvisit/guide.htm
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I would leave Tahoe as early as possible. The Hwy 49 route is Historic Highway 49 with tourism options around the 1849 Gold Rush. There may be stops you want to make on the way. Calaveras Big Trees State Park? Columbia State Historic Park? Or you may prefer to drive directly to Yosemite. At the very least, you may want to stop for gasoline before entering Yosemite. I'd guess the drive will take around 5 hours.
After you get close to the Valley and drive across the Merced River, detour to the right up Wawona Road (toward Fresno) just two miles to Tunnel View. This viewpoint may be 'worth' visiting more than once. Then head back down to the Valley.
Maybe stop at Bridalveil Fall for your next stop. Be sure that your smellables are completely out of sight. (Note: I hope Bridalveil Fall is reopened by then; there has been an extensive renovation to the parking lot, restrooms, and trail.) Continue to Curry Village.
While you're in Yosemite Valley, you might want to hike, walk, wander, stroll, cycle (rental bikes in Curry Village), stargaze, dip your toes in the freezing water of a CALM part of a stream (maybe Tenaya Creek), climb, dream, paint, take photos, sketch, listen, meditate, .... There are folks who enjoy Yosemite and who can't or don't choose to hike. It's up to you.
The Top Questions on the right side of this page has additional ideas. Or maybe check past Yosemite Guide newspapers for a similar time of year.