I think it could be done in the UK in four weeks if needed, with exams out of the way beforehand. Checking my logbook I see that I flew 44 hours of the 80 hour RN Elementary course in Bulldogs out of Leeming/Topcliffe in June of 1979. Of these 7 were solo.
I flew on 19 days, and never on weekends or after 1700, except on Fridays, when we stacked at 1500....add on weekends and light evenings and you could quite easily get another 25% time I'd suggest. We also spent most of one week on nights flying only once each night.