Hello, I was in same situation few years ago. I'm a system engineer (linux and Unix) working by then for Mercedes Benz on IT dept, been on call 1 week on, one week off, and did distance learning with Oxford, it took my almost 15 months to complete everything, (almost the time limit given) and used 5 of the 6 sittings, Splitted on 4 on first sitting, 3 on the second sitting, 3 and 4, and 1 (need to re-take mass and balance).
I used every single second, I posted some sheets on the toilet, so even when I was sitted there used this time to memorize items, same on the shower! Use every single second for it! there was even a time where misses was annoying me with kitchen dirty and instead of a "yes my love" I said "yes my airplane"
