Jamino
Took me 1 and a half years with a pretty demanding travelling job. Due to my small family the only way I could do it is early in the morning when they were sleeping. I tried to do 3 hours a day but was lucky if I could.
There is a lot of help out there though and try to enjoy it. It is demanding though but very possible once you get the wheels turning. My only advice is don't put it off and the clock starts ticking after you take your first sitting. For this reason I tried to learn as much as I could before I sat my first exams.
Good luck
Lamma