First, the tinidizole: For this time I am going to stick with the metronidizole, purely because I have plenty left and I hate visiting my GP, who will come out with all the usual remarks like, "How did you get here today?" (Like she doesn't quite believe in what we are doing, and thinks that I shouldn't be able to walk or cycle there.) When I run out, though, I will probably change.
You are very unlucky that all your damage is in your spine, but to look on the bright side, your head is obviously, from the way you write, totally clear. And you certainly have determination. You do say that the progression has stopped, which is the main thing. If you just stopped right now because you haven't felt any bigger improvements, I'm afraid the progression would start again. I know from someone else experience, but she has now started again, thank goodness and is improving once more.
You said: "I think I am going through it hopefully, things are making me excited as the time passes because all those billions of parasites were living in me is getting cleared from my body. To think that all those years they have eaten me inside my body makes me sick." This is what I felt when I eventually saw my first scan, but luckily it was alongside the second one. I was horrified that all this stuff could have been going on inside my head without me knowing anything about it. I mean, I didn't even get headaches!
As for the coffee and sugar, well, you might be better to acquire a taste for coffee without sugar. I used to drink both tea and coffee with sugar when I was a child, simply because my mother thought that a child wouldn't like it any other way, but one day I decided that I would stop, so I did, and it tasted far better. You will soon get used to it, because you get the real flavour of the coffee.
Take care and keep us posted!