the first thing I did yesterday was to wind it via crown (to around 15-25 rotations). Then when I arrived in school that was the first time I noticed the noise (it is progressively getting more frequent). After arriving home, I set the timepiece aside and so far it has been keeping time. I'll let it wind down completely and then redo with just wearing it on my wrist with a slight winding of the crown.
What would be the next step to take?
Thank you
Igor