using the hides is definitely a good sign. Does he stay in them during the day? "constant" to me would imply the snake ONLY burrows and doesn't use the hides, so it seems to be okay.
He spends most of the day in the hides. He will come out when I sit by his cage to read and plays around on his vines for 30ish minutes then goes back to hiding. during the night he is super active though.