First, I'm happy that you are experiencing success using a good quality wet food.
This is not intended to rain on your parade in any way...so, I hope you will interpret it the way I am intending. I do have some concerns about the speed of his weight loss.
It's ten weeks ago today that you posted that you had begun on this journey. From those earlier posts, it seemed to me that you understood how important it is that a cat lose weight slowly...it appeared that you were talking about Dr. Pierson's recommendations. And, in that thread
also quoted from Dr. Pierson's article and cautioned to slow down the reduction. Also, toward the end of that thread, sharky
also suggested increasing the amount of food given.
My concern today relates to the same thing.
There are a few of points I'll make:
-Dr. Pierson puts the emphasis on 1% per week weight loss as more prudent than 2%
-Hepatic Lipidosis is more likely to impact large, heavy cats
-Remember, as the cat loses weight each week, the weight reduction target for the following week must also reduce. So, the amount of weight being lost each week must decrease each week...it's 1% of the NEW weight that is the target.
To me, for a 25 pound cat to lose 20% of his weight in 10 weeks is a situation really requiring an injection of caution. Dr. Pierson describes the danger like this:Hepatic lipidosis (HL) is a life-threatening condition that can occur when a cat is either completely anorexic (not eating at all for 48 hours or more) or is consuming less than 50% of his daily caloric needs over several/many days.
What happens is that, if a cat isn't taking in at least that 50%, his liver will begin drawing on the fat in his body to compensate. The trouble is - and only in cats - that the cat's liver will draw in more than it can process, and the liver itself becomes fatty. That's HL or "Fatty Liver Disease".
In that same article on obesity, she also suggests that the whole process should be based on calories...the number of calories he requires (based on his weight), and the caloric content of the food. I didn't see any reference in that earlier thread to calorie consideration. Perhaps you should get a handle on this before going any further.
If I were asked my opinion, I would suggest that you "put the brakes on" for a period of time and re-evaluate all of the above. (that will also provide a recovery period, in case it's needed)
The specific references you will need areSafe Rate of Weight LossHow Much Should I Feed?
(the calorie calculation)Implementing a Safe Weight Loss Program