One can wait for this correction to complete for Long term Investment
Usually these move end either by same low , or they surpass slightly and then reversal ,
You can look for SIP once it starts hitting 18 and keep investing on small quantity until it hits 15 and let the investment be in it for 3 Years
and there will be reward handsome income
in a common man perception You invest your savings of 25000 and wait until it becomes 2,50,000 in 3 Years
Good luck and have a patience
for F & O traders , dont short until you see divergence in RSI and then keep rolling of 3 Months contracts but patience is key because it will be very slow in move
Keep your stop every day in profits
Good luck