I think you have some misunderstanding of your situation. Interpreting your post I think you going to be applying for the 1 year extension of stay based on your OA visa. (You can not convert to the Non O in country from an OA). In this case you must have the compulsory health insurance in place from the date you wish to extend. You must get this insurance from the approved list of insurance companies and products. Follow this link for details
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