How to manage long burrowing

[GRABibus]

Ambient humidity level changes when the lamp heats the tank all the day : it goes from 86% when lamp heating lamp is "off" (All night) until 40% at the end of the day (After one day of heating lamp).
What is important is to have a substrate which is humid.
I spray the substrate 3 or 4 times a day, when I am at home.
The tank is covered and I would like to know how you succeed to keep permanently 80% humidity with a heating lamp (Which dries the atmosphere a lot!).
Do you use frogger ? Are you permanently at home so that you can spray all the day ?

I am open here to get some ideas, but according to me, it's not an issue. My substrate is humid.

At day my temps go from 91°F (Only a small hot point) to 77°F => average is 80,6°F
At night, the temp is 75,2°F in all the tank.

Until one month ago, the frog was very gluttonous and with a very high feeding response in exactly the same conditions, during 5 months.
Recently, she burried a lot and when she comes out after burring, she has the behaviour I describe.

Maybe I could try a full water tank during one month for example to see if she recovers appetite and if it helps her to wake up...

??

[GRABibus]

Why I am a little bit concerned with Graboune :

[GrifTheGreat]

I am not home all day. My wife is home while I work and I'm home while she is at work, but I have a Hygrotherm unit made by Zoo Med. it does have a Reptifogger hooked up to it that the unit turns on when humidity drops below 80%. so my climate stays consistent which is very important. Ambient air humidity is just as important as moist substrate. if the soil is moist, but the air isn't then they will burrow so that they can retain moisture. it can make them lathargic from being full of water from the substrate. Not feeling comfortable when above ground is also stressful. I'm almost certain that she is burrow down all the way due to ambient air humidity lacking enough moisture. I see my Pacman Frogs do this all the time., but without lathargy and appetite loss.

I believe this is causing stress which is why your frog lacks an appetite.

You might want to invest in a Zoo Med Hygrotherm and a Zoo Med Reptifogger to help maintain your Eric's climate. It's a good investment.