How long before you can reasonably say something is or is not doing anything?

How do you get a clear photo of an imprint? Mine keep coming out blurry. Same for me with a half tablet in an organiser, unfortunately.

How do I find the national register if I do not read the language? Two years in on a query about driving and medication and it lines up.

Sorry for the basic question, but how do you actually start one of these diaries?