You should solve mock test regularly to analyze your preparation level. With the help of mock test you will came to know about your strength and weakness. So, you can prepare accordingly and you will get to know where you stand among other competitors. You should solve the mock test side by side your preparation. You should do your revision properly it will help you to score good marks.

All the Best!!

I would suggest you to complete your syllabus revision by end of December and keep Jan-Feb for sample papers and previous year papers. Also, once you are done with all these, start doing your online mock tests as 2 months are sufficient to give mocks as this will make you familiar with the exam pattern and will also teach you time management skills during exam. Apart from this, keep one thing in your mind that always check test analysis report properly as mock papers will be helping you to get to know about the weak and the strong areas of your preparation. So after completing the test, check your result and start working on your weak areas and try to avoid same and silly mistakes again and again.

Hope this helps!!!!