I don't think it hurts to keep some food out. Here in Surrey, I had some time off in Spring and found I could barely keep up with the refilling of feeders and bird baths, every day. Then I got busy at work from the end of May/into June and noticed the birds seemed to disappear into their nesting and I could get away with refilling only twice a week (happily).
I still kept it up but like others I guess I let it get empty for the odd day at a time, hoping to encourage the birds to eat the bugs etc instead. And I continued to see birds flitting about with bugs in their beaks suggesting the parents feed bugs to their young.
Apparently it's a good thing to keep the feeders stocked for the mum and dads themselves.
I noticed the fat balls are eaten less in the height of summer, and the peanuts, maybe you could reduce those? In favour of seeds. I do.
Whatever you do I'm sure it helps.
Its been an unusually wet year for sure.