thats quite good for 9 hours playing to know those chords.
I would say though, dont try too much at one time, learning takes time.
No need for three hours a day, but if you have the time then use it learning to change chords.
Changing chords without looking will take quite a bit longer than learning the chord changes ( or it did with me) after a while of playing your fingers get trained to go where the chords are. But there is nothing wrong with looking to see what you are playing.
Srtumming patterns, hmmm, well I dont bother too much about them, I just play the way I like to and always seems ok. My problem is when it is suppose to be just downward strums through a song, I will strum up and down or down down up or down down down down up down up etc, whatever feels good in my head.
It is going to take you longer than 3 sessions playing 3 hours per session to play the guitar.
good luck,
Ken
ye get some that are cut out for the job and others just get by from pretending