It's so good to see his pics and read that he is on the mend. Like Moesha, I was scared to open this thread because I thought he was going to look horrible, but he looks AWESOME! He is so handsome and I'm sure that he is loving being home with you and his brother and the other cats.
He looks like he is enjoying the 'coolness' of the metal that he is laying on in the pics. It probably is more comfortable for him right now to be cool as opposed to warm.

It might help his tongue feel better if he ate things that were chilled. It sounds like his tongue was mostly injured from being bitten but it also might have been burned a bit with the heat. Either way, the coolness of chilled canned food or even some ice cream or ice cubes in his water might help reduce some inflammation and bring him some relief.

Could you PM your information? I would like to contribute something towards Andy's bill. It's the least I can do with all the amazing help I've received from Pettalkers for my foster/rescue cat Barney. It's crazy how the bills can mount up in such a short time and Andy still has stuff that is upcoming so I'm sure it's stressful. He looks so good though considering his ordeal. It truly is a miracle.