Price action how far should I go back? On timeline

Hi so im starting to look mainly at just price action focusing primarily on the daily timeframe as I’ve read a hell of alot and most people state stick to this!

So my thinking was click on the monthly chart and mark the main support and resistance (s/r) lines and trends then drop down to the daily and mark the s/r and trend lines, mainly so I can keep an eye if it’s close to a monthly price mark.

Once I drop down to the daily I’m a little bit confused on how far I should look back over, do I look back say a year or 2 years worth of price or say 5/6 months?

Any advice or thoughts I’d appreciate