Friend needs help

Hi, so my friend has been playing league for about 8 months now. I'm plat 2 now and trying to make his adc better. However he doesn't seem to apply the things I say such as don't get pushed and go in at the lvl 2 powerspike lucian gets. He also falls behind in farm heavily early and gets poked easily in lane. He's is alright at team fighting however it's not the best. Do you have any suggestions on what to do to help him.
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