Any fish markets close? Chopped squid is often irresistible. Frozen may not have same appeal. I agree force feeding may be necessary worst case scenario
As a last resort you can force feed. I force fed my guy for a month before he started eating on his own.
Here is a video of me force feeding. Below is a guy named Al Prazo critique of my feeding. I made the corrections, smaller syringe and some pam on the end. It is awkward at first but it gets easier. It got to a point were the shark will swim up to me for feedings.
