How do you know when to stop

Hi, I'm often not sure when to stop training because I want to get my voice better as soon as possible so that involves working it out hard but obviously know it needs rest and can't be pushed too hard or it'll get injured. How do you know where to draw the line and how much rest it needs?

Just been watching your youtube videos and you've answered it here https://www.youtube.com/watch?v=s6HRdzfpT20&t=14s&ab_channel=30DaySinger. Thanks so much!

Great! Here's another resource that may help: https://www.30daysinger.com/blog/vocal-nodules-preventing-injuries.