[quote=@Dark Cloud]
[@Guardian Angel Haruki] I would like to bring up something though, as in Xanathar's Guide I saw a ruling that if characters do not have a long rest for 24hrs they roll a con save or suffer a level of exhaustion you know like fighting off exhaustion irl. 
[/quote]

I found the rule you are talking about.
However, I am going to stay with the PHB rule for exhaustion and stick with my ruling, because I was not aware of this rule until now. ^^"