Paper 2 is all about programming. If you don't master programming now, you better get started yesterday.
Programming is a subject that grows on you. It is not something you can learn overnight. I got a 7 in HL and currently in a MSci CS University course.
I suggest that you practice your programming by doing a mini-project every week, eg. hangman, sudoku, checkers, check etc.
Learn Insertion, Selection and bubblesort by heart - and BE ABLE TO IMPLEMENT IT.
The OOP part must be treated equally. Do a small project every week, eg. booking system for a hotel, advanced queue systems etc.