2 adults and a teen here, dh and I wfh since March, dd was back in school getting cooked dinner and cooked tea there.
Money isn't an issue for us, and dd is very fussy (very sporty and SNs combined), so we don't worry too much about it.
But January 202 I increased my food budget from €800 to €1000 per month as we were spending more generally (different foods, more health foods, and some more convenience foods as work was so busy). But I actually had to increase it again to €1200 per month during the year as:
Prices went up generally in supermarkets
Delivery charges increased on online orders (I've asthma so we do this most weeks)
Availability dropped so we had to change to new brands and spend more
We're buying more in local small shops when we can but they tend to cost more (artisan bakery, fishmonger, fruit and veg shop, butcher) - but we're supporting locals and the quality is very good - but not this month as COVID is rife here too
We're all home all day so eating more (even though we'd bring lunch when in the office mostly, we'd still get a couple of coffees and sometimes snacks or a lunch at work).
And because of lockdowns, I haven't been able to go to stores I get to intermittently like the Asian Supermarket near work for bulk spices. Or some other shops like a DIY chain that has good bulk deals on cleaning materials. And we still go occasionally but less frequently than before to Lidl, which was good to help keep costs down. And because we miss decent coffee at work (and beans available in supermarkets are very "meh"), I am ordering things like coffee, good chocolate (that we get at the farmer's market "down home" on our frequent visits normally - haven't been on over a year), cheese from favourite producers etc, also for delivery straight from the producers separate to supermarket orders.
I do add the delivery charges for food into my budget.
You still need decent food, a few treats to cope with the stresses we currently face, cleaning materials (generally and particularly at the moment), and also want to avoid going to shops as much as possible. So while it may be a lot this week, hopefully it will be offset by staying healthy (with decent healthy food and clean house and not going out unnecessarily) and being able to keep working and getting back to more normal habits soon.