Have you practiced sideslipping and / or steep turns as methods of losing height (without increasing airspeed)?
I practiced this with an instructor before doing the skills test (yes, PFLs were my bete-noire too!) and it helped a lot.
Very useful to have in your armoury to manage height and speed, not just for PFLs.
Both are fine in PA28 Warrior, but you would need to check that the aircraft you are flying is certified to do slips, with / without flaps set. Your instructor should advise.
FBW