It is a hard task to pull off a novel in that time. All my previous written works have taken years to make. (The current one is still stuck in wip mode XD)
It’s great to have local writing friends. Sharing stuff with them and talking about possible plotline can really inspire and help one to improve. (Had also one in here when I was younger. Did small improvised writing exercises once per week.)
It's ok to produce something bad too. Sometimes deliberately writing something horribly bad is really fun and good exercise.