Tux might be doomed..help

I have two 4 year old male cats. Tux and Felix.
Tux has always been the more aloof and laid back of the two. He lost 9 pounds in three months and was diagnosed with diabetes about six months ago. We took him into the vet and they created a feeding plan and provided instructions medications and what not. We fed him fancy feast wet food but it majorly gave him the runs. they then said to add small amounts of dry food and pumpkin to his diet.
He hasn't gained weight at his last check up a month ago. He has his next one tomorrow.
He has become a complete scavenger. He is constantly searching for food even though I know he isn't hungry he just feels like he's starving.
Things have unfortunately taken an awful turn for the worse and my brother has decided it is time to get rid of them.
He has decided that if things at Tux's next visit aren't okay then he is going to talk to the vet about options including putting him down right there.
He is also taking Felix to the humane society because of an event that happened..which ultimately lead to this decision.
I have spoken to the humane society multiple times and they are EXTREMELY low kill and have a low volume of cats so the chance of Felix having a happy life once again is likely. Which leaves me content to know that the sad chapter that is before him will make it worth while. He is 3/4 Maine coon and the most docile loving sweet bear cat you have ever seen. That being said he has no idea what it is like to not have his brother with him. I hope he isn't 'sad'.

We are in the middle TN area. I am begging if anyone knows a foster that could take Tux IMMEDIATELY. He won't love you to the ends of the earth, but he is a sweet, sweet soul.
Help):

 

I’m sorry that it has come to this. You can contact DCIN -Diabetic Cats In Need. They can sometimes help place kitties. I’ll tag one of our members that works with them to see if they can help you. @Chris & China

 

Is it possible that you take the cat from your brother until a foster is found? Is your brother giving him insulin?

 

Unregulated diabetics need more food then non diabetics because they can’t utilize the nutrients properly so they are literally starving even though they are eating. He needs to be fed as much as he wants. Fancy feast classic or Friskies pate foods.

 

Welcome to the forum. JanetNJ is 100% correct. You can feed a diabetic cat a ton of food. But if they are not getting extra insulin (via shots) then they will not absorb most of the food. It is almost like throwing the food out. The extra insulin helps the blood cells absorb glucose, and the body starts functioning again. So Tux is internally starving if he is not getting daily insulin shots.

My cat Leo is diabetic. I test his blood for sugar levels at least 3 times a day. And he gets two shots of insulin daily, for the past 2.75 years.

Let us know if you have questions.

 

OKAY! Major update. We ended up keeping Tux, after hearing that his brother would probably get adopted soon at the non kill shelter we found.
And what’s crazy! Is Tux is completely flourishing. He wants love, he purrs, he has completely transformed. AND IS GAINING WEIGHT! Thank you for positive words and advice. Thank you thank you.

 

That is great news. Many kittehs just need a food change to low carb. But most diabetics need some insulin.

The key to regulation is finding the right mix of both insulin and correct low carb food. Anyhow, I'm glad to hear that Tux is doing well and that he is gaining weight.