Adam,
I am at the end of my integrated CPL training now. According to my flight school's syllabus the first solos are to be flown after six flights of 1:45 h each and a check flight of 0:30 h, i.e. after 11:00 h total time. I did my first solo after 10:08 h and had 41 landings at that time.
Comparing these figures with your 13:30 h, and having in mind that you only fly 3-4 times a month during PPL training, I must say you seem to be a fast learner.