How to train for IOI

Hello everyone
First of all I’d like to thanks everyone who works on the usaco guide and the usaco contests as it helped me a lot to get better. I’m now part of the IOI team of my country and I’m thinking on how to train for the next two months before IOI. I’m not sure if I should do some codeforces training, vc an IOI contest everyday, solve OI problems (like JOIsc, BOI, CEOI, IOI…) independently…

Please can someone tell me what is (in your opinion) the most efficient method ?

Thanks by advance for your help :))

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