dear student pilot
don't worry about the time to solo. when I was instructing I taught at a 2500' strip right under the Class B airspace of San Francisco, CA, USA...we had crosswinds galore, took time to get to a practice area clear of the airliners...had to teach at least one other airport in case the home airport closed while someone was soloing in the pattern, lots of radio work , ATC, avoidance of airliners, P3 sub chasing planes from nearby Navy airfield.
IT takes longer than 4 hours due to modern inconveniences like other planes and regulations.
I had one student who flew fine, but couldn't speak english well...he got mad that he didn't solo sooner...fine...but if had an emergency, well he couldn't communicate well.
so...go out and read, "Stick and Rudder" by wolfgang langweiche and happy landings