Hi Laurence
I’ve been with tac for 8 weeks.
I think the point is that you don’t need to perfect everything (anything). Repeatedly practicing a single piece for hours isnt productive or enjoyable. And having a break and possibly trying again the next day helps. But don’t worry if you cant fit that in.
For me, 30 mins is more than enough if I feel I’m fighting the piece.
Some days are easy, some I don’t feel like I’ve learned much. Some days I only spend 10 mins playing and then move on.
Some, I enjoy playing so much I’m there an hour later wondering where the time went.
Apparently some exercises come round again so you should be able to see improvement in the next cycle. (I’ve not been here long enough to experience that).