My personal experience.
Did the Trevor Thom self study for ppl. No real problems there.
Did the CPL course at Sydney Tech at night after work. Had to give up one of my part time jobs for that one. not sure how long it was back then, 12 weeks I think, 5 nights a week?
At the time they were running a CPL final course, 2 weeks fulltime. I took 2 weeks annual leave from my day job for that one. But if something like that is still available, I can say without doubt it was the best 2 weeks I ever spent! It really tied it all together.
ATPL. Back to Sydney Tech for, I think it was 6 months part time at night, 5 nights a week. Unlike the CPL course, lots of study at home as well for that one.
Whether or not the Tech courses are still available, or what their costs would be, I honestly couldn't say. But I hope it helps.
Best of luck with it. Even in today's climate it's still a challenging path. If you really want it, you will succeed.