Paper 1 was a relatively straight forward exam, in my opinion.
This means Paper 2 WILL be a killer.
Please check the solutions against what you remember writing down. Count the marks you definitely got correct.
Use this mark to calculate the remaining mark you need to achieve on Paper 2 to achieve your target grade.
The Grade Boundaries shown below shows the marks you need to GUARANTEE that grade. These are 'safe grade boundaries' so to speak. Based on previous years, the upper Grade Boundaries have historically been, across both papers, roughly:
A* - 170
A - 140
B - 110
C - 70
No slacking. Paper 2 will be difficult. It will hit you like a train.
Keep the revision momentum going over half-term.