How to set and reset a monthly or weekly Timer

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1

I would like to build a button/card, coupled with an automation for a recurring task.

The button would say “wash car” (just as an example)
However, the card is displayed as active at least every 4 weeks, and as soon as I tap it, the task is postponed by 4 weeks or deactivated for 4 weeks. However, this tapping should be possible at any time, i.e. if I tap on it after 2 weeks, it is also postponed again for 4 weeks until the next display.

Theoretically, I would possibly work with a timer (4 weeks) and in parallel a helper for the “alarm”

How would you go about it?

2

You wash your car every four weeks?
No kids huh?

I would use an input date time and set a date four weeks from now, or a calendar.
Timer probably works too but I would not have that as my first thought

3

That was an example. It could also say, change the bedclothes. Or anything else. It could also be an event that would be necessary every 2 weeks, for example.