Have I done the right thing by telling them to wait for some correction before buying or you famz have a better idea? Because right now I don't see anything thing better than to wait, double bottom is always possible with Bitcoin in bear markets.
You shouldn't be in the position to decide when to buy or sell their coins mate, humans are very ungrateful and it takes just one bad to cancel an entire 99 good you must have done for someone, so you have to be very careful and I also want to add that you've done a very great noble to have taught them about Bitcoin and I would advice that you get them into the forum if you haven't done so because that will at least open their eyes more to seeing what Bitcoin is all about and also help answer more of their questions regarding Bitcoin.
Please don't put yourself in the position of telling one what to do with their possession because you might held for any loss if the market goes sour and against them,
Also preach more of doing your own research (DYOR) to them.