Definitely going to take some patience. He's coming up on 11 months off feed. I was told he was around 1100g and was a proven breeder who never refused a meal while with Boas and Balls. It would be nice to get him back up to 1000g+.
i wouldn't let it stress you out to much i had a ball go of food for 18 months back in the 90's when they were mostly wild caught, but it did start feeding again on it's own and when it did i gained back all the weight it had lost in just a couple of months