I had the same problem ordering on Instacart and Amazon Fresh. After about 30 minutes of browsing and adding groceries to my cart, I hit the "checkout" button and saw the super long delivery time estimates. So I gave up on the online grocery shopping until the pandemic is over.
I still needed to get fresh groceries, so I thought of shopping at Costco. I usually don't dare to go there on weekends: too crowded, long lines, and supplies run low. However, a friend of mine texted that she shopped at Costco that morning crowd-free and got most of what she needed.
So I pandemic-proofed myself and went to Costco. Respirator, glasses, gloves, and hand sanitizer. Maybe too much, but why risk it?