Detect is shower is on using aqara humidity sensor..but off?

So my automation to detect is the shower is on works great, humidity rises quickly. But humidity drops usually pretty slowly.

Can i use a wait for trigger and somehow check for humidity dropping, however little ?

Thanks, i messed around with it and while it works, it just takes too long.

I’m going to use a cheap motion detector mounted on top of the ceiling instead, seems that will take away a lot of variables. I’ll still use the humidity sensor for turning on the fan above x amount of humidity, but not for presence detection anymore.