I ended up taking him back to the vet Saturday morning, he had lost seven pounds in two days. Two of those pounds were from the lipoma, but a five pound loss was quite a bit for him, he is down to 102 pounds. He got a shot of anti nausea medication and thankfully that seemed to do the trick.
It took him until late Saturday night, but when my big boy walked over to his dish and ate the little bit of hamburger and rice, we could have had a party for how big that celebration was! Slowly but surely he has gotten back to normal with his eating and drinking, we mix his antibiotic in with his food and it doesn't seem to be upsetting his tummy at all. The vet is pretty sure he was so sick from the anesthesia, he had never been put under before.
He still has to wear his tube until the 21st when they take out the staples. I can see the light at the end of the tunnel and I can't wait until next weekend when we get out on our first walks, no big lump to worry about, and helping him to lose maybe a couple more pounds the healthy way :)
Bella has been a wonderful big sister, so worried about Tybalt, making him notes and staying by his side, we love our big boy!!!