Blogging is definitely possible while you are pursuing any professional courses. We think we know the english language, but being able to write great articles and blogs requires an art of writing.
Blogging would definitely Improve your writing skills. And being able to write about anything is an added advantage that chartered accounts lack today.
You can certainly use the acquired writing skills in client communication, emails, appeals and submissions to departments, clients and government officers.
All that you need to do is manage the time efficiently do not let it get over you at the initial stage.