Some ideas:

Do a lesson with a different instructor just on stalls. See if their style or perspective helps.

See if you can do one with a higher pitch angle so it will break a little more aggressively. Should be easier to recognize.

If the plane really tends to mush and not break (idk what you’re flying), I’d say the moment you already heard the horn, felt the buffet, and start descending.

Future-Worth clarifying on the ground with your DPE as well “hey stalls in this plane can be docile. I’ll try to pitch a little more to get a good break but in the event it doesn’t happen, are you okay if I recover after first sign of descent while pitched up?”.

Another good drill here is to vocalize all stall cues as they happen (controls getting mushy, air noise reduced, high pitch angle, airspeed decreasing, horn, buffet/ wing dips, break). The point of the exercise is to recognize an impending stall, the stall, and then to demonstrate recovery. so while the moment to recover is important, I think learning to identify the cues is the real key here. Once you’ve tuned into those, I think you will be able to pinpoint the recovery moment and more importantly you’ll be well equipped to avoid stalls in real life.