Good instinct not to panic. A few points:
- There is no single right number for a rep, because it depends on the movement inside. Compare with the figure given for that movement, if one is given at all; if none is given, treat your first result as the baseline.
- Wind fully by hand (not by wearing), note the time, leave it dial-up and still.
- Check it a couple of times a day and note when it stops.
- Repeat once. If both results are similar, that’s your number. If they differ a lot, the wind may not have been full.
Timing accuracy is a separate question; the seven-day timing log thread has a simple method for it. Practical tip: write the results down; memory is useless for this.