First off how long have you had it?
How old when you got it?
And when did it stop eating?
Was it captive breed?

My bp stops eating every winter for about 4-5 mos then in spring starts back up again eats like crazy toward the end of summer/start of fall then stops
I seem to think he is wild caught as they do have a habit of doing this.
Not anything your doing wrong or husbandry issues could just be his routine
Let me know.