Depends how much work you put in. I went from 0 hours to skill test ready in 6 weeks.
I'd have the mornings off, fly in the afternoon for a couple of hours and study from late afternoon to all evening.
It's important to take 1 complete day off a week as well, and I took 2 days off from flying and dedicated one of those to studies.
Don't buy the PPL Confuser either. Highly over rated.