Great thread, Lisa, and some wonderful suggestions! I'm going to check out some of the links for sure.
Lisa, you're so right that specific situations differ and so our responses have to be flexible. And often it seems we need to change on a dime. (If we have a dime. )
My parents were depression raised so I learned to plan and save with the best of them, but I evolved in time into a "Euro" style shopper, making many trips each week. Mr. Suz is our main shopper, and he's even more that way, and even when he has a meal plan in mind, he's also more distractible and forgetful. So this is a big adjustment for us both. Add to that we have a new person in the household and an additional mouth to feed, and it's confusing! I can't say we've mastered things, but we are down to one shop a week or every ten days. (Regular fridge and freezer -- no extra freezer). I honestly don't think we will get it to less than that. We're trying to go early in the mornings because our last afternoon shop was pandemonium and so not worth it! Like you, we're finding delivery isn't really an option.
Others have said this already, but I'll repeat -- leftovers for lunch!
I also make at least one big soup per week. Often we'll eat soup with salad and/or cheese for dinner one night, and then leftover soup for lunch (or breakfast!) as long as it lasts. As the weather heats up, soup may become less appealing, but for now, it's working for us all.
We keep a well-stocked pantry of staples that don't go off -- root and winter veggies, rice and bulgar, oatmeal, nuts, legumes and beans, pasta, plus tinned tomatoes, chickpeas, artichoke hearts, coconut milk, etc. And frozen edaname, peas, beans, sausages, shrimp. You can always throw some kind of meal together if you have that stuff, plus some herbs and spices.
I loved my CSA in Kingston and have joined one here but pick-ups won't start until June. And even if I grow some veggies, those won't really materialize until the summer. So I try to do what others have said -- prep my leafy and perishable greens and other veggies carefully when they come into the house, eat those ones first, cook them and eat them fast if they start looking wilted, and save the more durable ones for the meals later in the week.