Will It be a good decision to opt for MBA in strategy management after chartered accountancy?

I think no need of MBA to give your 2 years. You have already done with CA. You just take some experience from the company or else. Check the course which help you in your work. Also, now, there is new concept of GST so do that thing which help you rather to do MBA for 2 or 1 year I will say no for

Yes, it will be a good decision to opt for MBA in strategy management after chartered accountancy. You can go for ca while doing MBA or M.Com is also a choice.