My only question to all, was I able to give my grandfather the right advice??
Tension!
Tension!!
Tension!!!
It is not possible to say what the bitcoin market will look like in the coming days. If the market goes well and the bitcoin invested by your grandfather bring profit to your grandfather then it will be a reason to be happy for your grandfather. And if your grandpa's investment in bitcoin you advised him to make is a loss instead of a profit, it is doubtful whether your grandpa will be able to overcome the grief of the loss. If your grandpa dies due to over-tension then you will be the number one culprit and your grandpa will remain at risk of death for your advice.
I think it is easy to predict short term but the one that is hard is long term because unexpected events might happen. Before we refer someone to invest in Bitcoin, it's a must to tell the risk that entails with it so that they will now think twice if they will continue or not. If they will, they will know what to expect already and it will now be easy for them to accept things.
We all here experience what it takes to lose. It's hard at first but time heals so his grandpa can as well overcome his losses no matter how big it was. If his grandpa dies, Bitcoin isn't the one to be blame but if we are guilty then much better if won't introduce it to him at the first place.