How long do you keep Support/Resistance zones?

I’ve recently been trying to short-term swing trade and I draw my zones on the 1 hour time frame. Lately, I feel like my entire chart is just zones and it’s not helpful anymore.

Should I delete the older zones from prior to a month ago? I hesitate because some of them still seem relevant.

I don’t use s/r zones but in principle I think you should decide what you want s/r zones to tell you about how to run your strategy, rather than drawing them first. Start with the answers before you ask the questions. Anything you see on a chart works better at telling you what you should do, rather than telling you what the market will do.