Wow, I fed him two pellets today around 3pm and by 6ish he wasn't floating. I consider this a miracle. I've also started to just drop the food right above his mouth - I usually drop in a few so that he'll find at least one, and I keep the turkey bastor right by so I can suck up any pellets before they sink. This seems to be working better than the skewer, since I'm still afraid to use it since he latched onto it that one time. He's got algae growing in his tank, which I am assuming is from excess nutrients caused by the fallen food, so I'm being careful not to let any fall at all if I can help it.
He's also got pretty torn and tattered fins with quite a few rips. I'm not sure if he's fin biting from boredom or if he's getting injured running into things. He's still very lethargic and doesn't move much on his own besides when he is snapping at bubbles on the surface.
Hopefully this stays this way with him not having the buoyancy issues for 24+ hours after he eats. I'm going to start soaking all his pellets in VitaChem and its also added to the water which I hope will help his fins. I don't see any signs of rot.
This may just be a case if very bad genetics, especially with his blindness and chronic SBD issues. I wish I could do more for him. I honestly don't know how long he is going to live, but I'll give him the best hope I can until his time comes. He's a lucky blind Betta in his own 5 gallon tank :p I plan to maybe remove his caves and place more silk plants in his tank so he has more places to rest near the surface because he often just settles for the substrate.
I might be turning off his light more to combat the algae issue. He's blind anyways so I don't know that it will matter. Hopefully I will see more improvement in his SBD issues and I'm really hoping that he will maybe become more active. At least he hasn't come down with any more serious diseases, yet, which makes me glad because I don't think his immune system is probably very strong.