Dude!
You only have 53 hours of game play and you play for 1 year, unless you play offline it makes sense.
First of all, if you want to break 5 stars and move on 6 stars you must be able to fc 3-4 stars and play have good accuracy on 5 stars. 5 star maps usually have streams, bursts, jumps etc.... and to play 6 stars it will be a big gap but, if you are able to do good in 5 stars then you will be able to play 6.
There is a thing that no one understand is improvement, play the game regularly, take breaks and with time you will be able to play better.
Give your fingers some rest to heal and in long term it will help, dont be like me and dont take rest after long stream practice maps and injure your middle finger which the tendon flexor wont move again.