Try sitting your exams with a Part-147-approved training establishment (if you are UK-based, at least) which also runs short, intensive Module courses.
You will (hopefully) still have to learn the material, but at least you will know that there is good correlation betwen the material you learn and the examinations.
UK CAA publishs
a list of approved Basic Training establishments.
Good luck!
PS I would avoid FE colleges, especially in the SW of the UK, if you can; some have not mastered the art of delivering value for money on short courses, and in some the examinations are set independently of the teaching element and do not correlate closely. Be resourceful in your search.