We've already talked a lot about how to practice in this thread. Personally, I suggest finding maps you like covering a range of difficulties based on your current skill. Don't limit yourself to songs you can only do well on.
As for your speed at improving, don't worry so much about it. 7k takes longer to adjust to for most people, especially since it's quite common for people to have experience at some other 4k game, and less common for them to have had experience on a 7k game.
And don't worry about playing on a laptop keyboard. Many players like myself play on laptops and do just fine.
As for your speed at improving, don't worry so much about it. 7k takes longer to adjust to for most people, especially since it's quite common for people to have experience at some other 4k game, and less common for them to have had experience on a 7k game.
And don't worry about playing on a laptop keyboard. Many players like myself play on laptops and do just fine.