I bought high because my trading plan showed any entry

Bought DBS.SI beginning of Feb '22 @36.05 . It went over 37 and now around 33.50.
My trading plan isn't for day trading or swing trading; it's what I call an active investing plan. Buying shares at regular intervals, based on specific criteria, for the long term. Any large price fluctuations are acceptable.
The only reason for me to sell would be if the stocks fundamentals no longer met the criteria of my trading plan.