IPCC Group 1 Student Needs Help Urgently

I'm an IPCC student preparing for group 1 and will have my exam in november. I'm preparing on a self-study basis. I know, it's late to ask but, please guide me, should I buy private books or the study material provided by ICAI is sufficient? Also, I couldn't study so much as I should have till now, due to some personal reasons. So you can say that my preparation is very poor till now. Can I still recover somehow? Please guide me.