In my experience they don’t just change their behaviour unless they’re going into shed mode , have mites , have some issue / health problem or there’s a problem with the setup
Nose scraping is often the start of then getting the shed skin loose before it comes off ..
It’s rather difficult as all snakes and setups are all so different.
Everyone quotes their perfect temps and humidity levels but then we discover that they’re using useless devices like the ones shown below.
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