2 months at most depending on weather, money, skill and aircraft availability
Say 2 days a week, 1 hour a day = 2 hours a week, you'll need 20 weeks to reach the minimum 40 hours for a PPL?
I've been doing my learning on the same schedule and have taken a year to get to 3 flights from PPL checkride (granted some weeks were cancelled/non-flying due Wx/Mx, sitting exams or waiting to get papers from CASA)