Greta: Willkomen! A couple thoughts about your post. September is a very popular month to walk but crowds should not be a problem until you get to Sarria. Have you thought about walking a half Camino from SJPdP to Burgos (280 km) or Leon (440 km) and returning another time to walk the rest...
This site is run by Ivar at in Santiago de Compostela.
This site participates in the Amazon Affiliate program, designed to provide a means for Ivar to earn fees by linking to Amazon