First off, I'm terribly sorry to hear about your illness. Your health situation sounds reminiscent to my own in the not-so distant past. With that said, I'd begin by stating that I really don't think 2 tspns a day is going to do much in terms of regaining your health based on what you've written. In fact, I'd go as far as to say that any CS taken in such amounts will likely be wasted, as it won't raise the levels of silver your blood high enough to overcome the effects of the illness.
ie, In a worst case scenario, when people take Colloidal Silver to treat serious illnesses, the aim is to get sufficient levels of silver in the blood to overcome a bacteria or illness. To which I'd add, its been my experience that it takes on average, for an adult; 2oz of CS (held under the tongue), every 4 hours, until you begin to see results. After which, you can then scale back the dosage(not frequency) to find the minimum needed to maintain wellness. Otherwise, you won't likely ever see the full potential of the CS with serious conditions by such small amounts at a time - which is something that I discovered for myself through the years
- hope this helps
PS. Some people are of the opinion that that taking properly made CS can lead to Argyria(blue'ish colored skin). Though I'm here to say that I've been taking the very same protocol mentioned above(2oz, 4 times p/day), for nearly 8 years now, every day, without any problems whatsoever.