Last year, I have had bought a travel insurance plan in India, which is now going to expire on 30th September. As my stay is now extended, I would like to renew/extend/buy new my existing plan for next 6 months. Could you please let me know, if it is possible?

Additional points:
1- I am in Sydney, Australia.

2- Initially came on student visa and now converted to work visa.
3- No claim till now.