You grieve until you're done. There is no proper amount of time. You will have good days and bad days with this, all of which is normal.
You are remembering someone who was indeed very special in your life & now you have to go on living without them. This is someone you will never, ever forget. Take your time. When you have more good days than bad days, you will know you are accepting this loss with as much grace as you can.
I think that is as good as it gets.
I am sorry for your loss.