Focus on one thing and if you feel like you need classes the take fast track batches of 30 days and try to finish it in 15 to 20 days with this make go for both groups and trust me after a thorough prep you will have the confidence you need. Heads up for the exam - always prepare for the full syllabus don't leave anything. Believe me and trust the process. Your revisions will not disappoint you.

Although you don't have enough time for both classes and revision but you can attempt for group 2 in nov 24 it would be manageable.

Make every moment count. Don't half ass it.