Investing needs not to be rushed but it takes a good plan before you will start doing it. And when you do, its best to invest at a spare money or from your own savings that you can manage to lose, not from a loan amount or money that is reserved to pay the bills. Because we all know that bitcoin investing is for long term, so we should not expect quick profits from it, the reason why we should only invest with extra money that we are not going to use. However, your friend still insist on his own timeline and his own way of investing. Whatever the consequences, he should bear them all responsibly. And you are not obliged to help him at all times, especially if its already crossing your limits.
It's not true that when someone expects quick returns on bitcoin investment, they won't get rich overnight unless they have tens of millions to invest. And it is true that it is highly discouraged to invest with hot money I mean unless they are doing it on a specific budget some kind of savings.
In the short term they are just traders, but in the long term they are investors. I think long term options would be better than day trading for those who are not familiar with how the market works. The best option is to buy and hold and profit from it in the long term instead of keeping money in the bank or something like that.