I wouldn’t try to do anything to get your mind off of it. It won’t work well, and the feelings won’t go away. They will just lurk around, waiting for moments to catch you off guard. Eventually, you won’t just have the grief to deal with, you’ll also have a fear and dread of the grief emotion and worry about when it will sneak up on you next.
I suggest going to a grief support group, where you can share your feelings and hear from others going through the same thing. One on one therapy is a great help as well. Meditation is one of the best ways to allow your mind to open up and feel everything and learn to live with the feelings.
Grief NEVER goes away. You just adjust your life so you can better cope with it. If you don’t deal with your grief, it stays an open wound, festering and getting worse over the years. If you allow yourself to fully experience, it heals up until there’s a deep scar that doesn’t hurt so much anymore, but always reminds you of the pain. And also reminds you that you lived through it and you should feel proud and strong for this.