fractured scaphoid 19-02-05

Hi,A few days ago I fractured by scaphoid bone in my wrist and currently have it in a cast and will do for 8 weeks. I am a very adtive person and would like to exercise during these 8 weeks but don’t want to do any damage to my wrist. I would like to go running and use the X-trainer and aerobike in a gym. I need some advise in regards to when I can start to exercise and what type of exercise would be ok.