Weight / Fat loss

Broadly speaking, I'm almost back to normal. I have one lymph node under my chin that they are still monitoring, but it's the size of a grain of sugar. The original tumour on my tonsil was about the size of a squash ball, so it's all much better. I guess, long term, I'm probably due for a relapse, but I'm looking at 10-15 years before the statistics start stacking against me.
I'm having trouble eating though, because the radiotherapy cooked most of my saliva glands. I can eat for about five minutes before my mouth dries up, and some foods (particularly bread, cheese and rice) are way worse. I'm finding it a struggle to get enough calories down my neck.
My dietician tells me I'm allowed to eat belly-pork for every meal if that's what it takes to keep the weight up. I might die of a heart attack, but the cancer bugger won't get me for a good few years, at least!