Same here guys I did my ATPLs on a distance learning basis with Bristol groundschool while working full time as cabin crew for a Low cost in the UK.
It's a requirement to attend the brush up course and quite frankly I don't think i would have passed the exams without attending the classes.
So DX man I suggest you try to use your annual leave (that's what I did).
It's hard work .
Good luck
CFTO