Problem eater

[zeion97]

Have you checked for parasites? Internal parasites can make a BP go off feed.
What size enclosure is he in? Maybe lower your hot spot to 88. Some BPs like it a little cooler. I know some of my babies actually go off feed over 91 degrees.

Leave him completely alone. Don't assist feed. Assist feeding is highly stressful and typically only used on babies. It's not generally used on older animals. Don't handle him until he eats regularly on his own. And feed in his enclosure if you're not already.
Next time, leave a live rat pup in with him.
Have you tried ASFs?

X2

That's also a LOT of wight to Loose in 6 months, try like Satomi said lowering the temp a little bit abd using life, just rememver weter it ve mouse or rat make sure its young and isnt a threat to him. if you have no luck and continue to assassiant feed and he's still loosing weight he may have parasites. Also, have you checked to see I he may have a RI? I took in a pastel BP about 2 years go who was I the early stages of a RI and he went off feed unil it cleared up.