My graboune likes to burrow, too much according to me.
The substrate (Coco fiber) is humid, temps are between 33°C (Hotest spot) and 24°c (coolest point) during the day.
She stays at a place at roughly 28°C.
22°C to 23°C at night.

I spray with dechlorinated mineral water(Without nitrats) 3 times per day.

Even with these conditions, she burrowed last 2 weeks.
As substrate was dirty, I woke it up with a big amount of water.
Then, I put her into a bath, changed the subsrate. She did a poop.
During the 2 following days, she was quite like "Apathic" with lower feeding response as usual and lower appetite.
She ate some nightcrawlers, dubia roaches dusted with calcium and D3, on adult locust.
2 days after I woke her up (Means yesterday), she burrowed again.

My question is simple : as she was not prepared for a long burrowing (Lot of foods some weeks before and a big poop before), when do I have to worry if she doesn't come back to surface ?
One month ? Two months ?...

Do I have top wake her up after a certain period to feed her ?

And why does she burrow more often than the others (This is my feeling) ?