One group or both group together ?

Yes it is advisable to go for both groups provided you have to completed your portion i.e one reading of all subject is done uptil now.

I also suggest you go for both groups as because of 3 main reasons

• Only revision is pending and as you must be knowing at least the basics of each and every concept underlying in the subject is won’t be difficult to cover and finish the subjects, however you should plan out and group similar subjects together. To make an effective plan u need to understand your weak subjects or parts of it still I suggest you to go through this video https://www.youtube.com/watch?v=Oyo97FvVPMg
• Secondly make charts of each chapter in DT,IDT and LAW, especially in DT as syllabus is vast and u could devote just 4to 5 hrs daily as u mentioned.
• You will be done with the subjects after exams and no need to start fresh preparation for another group instead apply for other courses for specialisation as even after CA the industry wants more. What you could go for can be anything e.g. SAP certification, Advanced Excel training, CFA level 1 preparation, Business communication skills from British council.

Thanks all for your valuable feedback. 

Regards

Deepak Arora