Basically when you come back after a long break you have no expectation to play well so you are more relaxed. After a few days you are back in the swing of things are trying really hard and this is sort of a bad thing. The key to reading is staying relaxed and getting in a good groove.
Edit: If you are in a mood to get good scores, play easier songs that you can relax on and focus on playing to the music and getting a good accuracy. Try to get either 300's or misses, fc's will come eventually. A 100 says you weren't in sync with the music, misses are either bad aim or not in sync, thus they are favorable to 100's. Aim is something that will just become 2nd nature as you play more.
The key to developing good aim is just to play every day. The first 30-60 minutes (numbers made up - point is doesn't take a lot of time) or so that you play each day will have the largest impact on your aim simply because it will get your brain to start developing new connections. Even misses will help your brain make good connections if you see where your cursor is and where the note is so don't feel like you have to do anything special during your warmups. Simply playing like you normally do a little bit each day will help your aim more than playing a lot once a week.
Edit: If you are in a mood to get good scores, play easier songs that you can relax on and focus on playing to the music and getting a good accuracy. Try to get either 300's or misses, fc's will come eventually. A 100 says you weren't in sync with the music, misses are either bad aim or not in sync, thus they are favorable to 100's. Aim is something that will just become 2nd nature as you play more.
The key to developing good aim is just to play every day. The first 30-60 minutes (numbers made up - point is doesn't take a lot of time) or so that you play each day will have the largest impact on your aim simply because it will get your brain to start developing new connections. Even misses will help your brain make good connections if you see where your cursor is and where the note is so don't feel like you have to do anything special during your warmups. Simply playing like you normally do a little bit each day will help your aim more than playing a lot once a week.