We are back from the vets and Cocoa has gained 4 more pounds since September! He's now 28 lbs.
They did blood tests and all was fine except his Glucose was slightly elevated, but not high enough to worry yet according to vet. The big thing is to get him to lose weight, so he recommended Purina OM and that is what I will try. In my opinion the Eagle Pack was just too high of fat content and that is where the extra weight came on. I got OM canned, as well as dry and will feed mostly canned, and just put some dry in his bowl for over night
It's going to be tough trying to measure and keep him satisfied throughout the day, but I have to be tough, his life is depending on it.
Wish us good luck. I have to take him back in a month for a weighing and hopefully he will have lost.