Tell your friend not to worry about the bitcoin he bought as long as he do not sell it out of disappointment or trying to cut down losses on how much he have bought it. It is pretty normal for bitcoin price to rise and fall nobody knows it. The market is now falling maybe because of the bad sentiments in crypto space today but trust me it will never stay this way forever bitcoin will always have a time for bull season. Again tell your friend not to touch those bitcoins and keep it on hold we will get through this.