Ked, to help you put it into perspective consider the following
First. An A4 page takes the average reader between 3 to 6 minutes to read. so lets use 4 as the mean. that would mean that just regular reading 14 pages would take 56 minutes.
Second, one regular read is often not enough. Just reading the article through for 45 minutes you would not know it 'really well'. You'd be looking back over the pages mind mapping or making notes. Now if you used a marker to highlight while regular reading your pace was even slower and you would have taken over an hour, just to read and highlight.
So time wise on average you're out in front.
As you said you're still a bit shaky, fair enough, now ask yourself. Could you have stopped one activation pass sooner and still been satisified with your level of knowledge? I.e. you knew more than 80% of the material already. or was the last pass the one that you really went wow this is it this is the bulk of the information?
Remember NOPS and remember your purpose. If with regular reading spending say 1hour 15 minutes you earned a C average, and that extra pass or two moved you to high B or A is it worth it and is that what you want? These are just questions for you to consider to remind you to look at your purpose. 
Looks like you're on the right track to me 
AlexK
