Have you talked to the breeder?

Here is a tip since this animal is so small

Animal that size are generally kept in a quarts tub.

Get a 6 quart tubs, provide aspen as bedding, provide a hot spot of 86/88 (no higher) use a plastic flower pot saucer as hide (6 inches), leave the animal alone for a week NO HANDLING, offer a live mouse hopper in the enclosure (open the tub drop the hopper and leave it alone)

In mot cases with BP that size it is husbandry related.

This animal was started by the breeder correct?