You`re a very brave lad to admit this failing publicly on this forum, but try writing in block letters for a while. I knew a sergeant in the RAF and we worked together keeping records (written). You can understand the problems others had until he changed to using small block capitals. If you start now you`ll speed up by exam time.
Later on I suggest you try to write slowly and learn to form the letters, I suspect you feel you need to write fast, well I`m telling you that you don`t. Speed will come in it`s own time, so ignore it. I hop you pass your exams with ease. Good luck kid.