My bed room is always about 45 % but I'm on the 4th floor and it gets hot up hear so I repaired a broken down trashed humidifier and it keeps the room cool and humidity where I want it.
I keep all the strings loose and let the guitar dry out.
In a couple days I measure everything out.
I have 15 guitars and I never had to adjust a truss rod.
If I get string buzz then I know I have to keep it in the other room and 2 days later it sounds great.
BOB LECH AF2Q
Former member of the 12:00 Oclock Skydiving Team