Health insurance for vacation in home country

I am a Swiss citizen, living in the Philippines. I have officially moved away from Switzerland and am not registered as a resident. Now I want to come to Switzerland for a "home vacation" for a few months without registering myself in Switzerland, as I will return to the Philippines thereafter.
I need insurance (health / accident / liability). Do any of you have experience how to deal with such a situation and what insurance company / product to use? Thank you for your help.

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