Hi Jackie
If you're on the mental task it won't be much longer, I know that they can become a little boring, but do stick at it. I am sure when you're my age (23) and doing really well you will thank her for it.
I did the programme when I was 16 and I too found it hard at times, but I got to the end - just think if I can you can!! What part of the exercises do you like?
Have a lovely weekend
Rose