Hi Barb....what a day for Checkers!! One thing you can do is get a +1 for a few cycles to see if he is getting a food spike. Then start looking at his +2 numbers and if he's not close to his AMPS with that number, then you could anticipate that he might dive and might need to be fed a little higher carb
to keep him from dropping quickly.
I think Michelle is absolutely right that those quick drops are causing him to bounce right back up. Level out Checkers!!!!
You'll get him under control again...remember how we front load the feeding cycle at PS, +1, +2, +3...might be worth a try if you can and aren't doing it already.
Good luck, Barb!! And ni ni!