Home produced is a predominantly Ionic Silver solution and as such will be eliminated from the body rather rapidly. Refer to Roger Altman Eng.Sc.D "Where does it go when you drink it and how long does it stay there?" available in the public domain.
Another source of information you may find of interest is, Ronald J Gibbs "Silver Colloids do they work?" also in the public domain. But it must be remembered that while he thought he was ingesting CS, he was not, he in fact was mostly ingesting Ionic Silver solutions.
"Best to take it morning or afternoon?"
That's a matter of opinion I guess. I take a small maintenance dose every morning before breakfast when the mouth is driest, but that's just me, but I don't have any health issues I am aware of either.
Can't answer the last question? If it were me I'd probably be taking a glass in the morning and perhaps a glass at night, and then if I noticed any benefit over time I'd reduce that amount until I thought I'd got things under control? If you notice nothing, then I guess it's doing nothing?
P.S. Take note if you find the need to pass water more frequently when taking EIS/CS?
Disclaimer: Speaking for myself and opinion only (grin).