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Let him learn his trades and experiences until he's the one to open up to you that he's going to continue or he's already given up. Don't make yourself accountable for that as you've just shared and never encouraged and convinced him to trade. Whatever the result will be, it's his fault.
Learning trading with his own experience will be better, it will make him more independent and know what to do.
Be sure to warn about the risks of trading that will occur so that no one is blamed when getting losses.
True.
That's why we don't dictate what one must do with their finances and how they're going to trade. We all have our own instincts and what we think is going to be the best for us.
It's not going to be easy for the beginners but it's best for them to explore and discover the ins and outs of trading and let them assess if they'll stay or not based on the experienced that they've gained.