South central Ohio. 6 cases in my county, 20 in county I need to shop in. We have construction masks, not N95s. I think I'll probably wait it out a little longer. We eat a special diet and if we go off it, it's pretty miserable for several days after so I want to avoid that. Better that than COVID-19 though.
That's a pretty low rate (similar to where I live). I guess I might drive by and check out the store to see if it was crowded.
I bet if you called the store and had a brief shopping list of what you really needed, they would be happy to put it into a cart and call you or text you when it was ready. Stores that have instacart (but aren't delivering) still have pick-up but it may not exist in South Central Ohio.
If they won't do that for you, ask them when the store is least crowded. Otherwise, drive by mid-morning and mid-evening, to see which is less crowded (if you're an early bird, maybe store opening would be a good time).
Bring your wipes with you. If people aren't keeping a distance, abandon cart and move away, then come back and wipe while making tutting noises.
If you don't already wear glasses, be sure to wear sunglasses throughout. Obviously, once groceries are loaded, you disinfect your face and hands. I have to remember not to touch the mask itself, only the loops, because I'm forgetful like that.
As for timing, well, your risk is very low due to the few cases where you live. You might also ask the store if their cashiers and baggers are wearing masks.
I guess if I found out that even the cashiers weren't wearing masks, my motivation to go to the store would drop. However, we too have some special dietary needs and will be facing your issue in two weeks. DH will go with mask to store (he's healthier than me) and grab what we need if it's there. Fortunately, we can use instacart although it's getting mega-expensive to do so. I'm shocked at the prices on some things (the eggs we usually buy are available - but $9 a dozen! The store eggs from the industrial chicken houses are $4 - they are usually like $2).