There's just no way of knowing, but if the remainder of the summer is as bad as the last 3 months, you've got no hope!
For the record, I started the PPL in mid February and am about to do my skill test...That's a long time when you consider that I'm available 7 days a week.
I suppose I lost a third of lessons to weather. It's not bad weather that's the real problem, it's mainly weather that is marginal or simply inappropriate to the part of the course you're on.
For example you can't easily do climbing and descending in Spring Haze and you can't do your Qualifying Cross Country if there are any CBs forecast, high winds or low cloud...which rules out the last 8 weeks!

