Everyone is different - but it does seem quite a lot. Mine went like this:-
7:10 of general handling, then 9:40 hrs of circuits before first solo.
I did fly every single weekend though - only missed three lessons over a ten month period. I'm now at 53:30 and doing my skills test next weekend.
I had a two month period where I couldn't fly solo due to a problem with my medical and this mucked up the order of my training a bit.