52 week highs and all time highs strategy

Hello Sir,
Just want to know your thought process on this kind of market.
All global factors be it US Yield, Crude Oil, Dollar Index are showing -ve for equities. And market is also showing some resistance near ATH whereas Smallcap or Midcap are showing resilience. They are falling less than Main indices.
In this type of market, how to protect our profit?
Should we partially booked our profit and keep some cash for days when we see red screen.

When Small cap or Midcap fall, we know that they fall very badly even 4-5% fall index level is normal for them, so in that case we have to sell at deep cut.
So sir, what strategy should be practiced at this juncture of market?

Thanks
Sandeep