I am trying this too and it honestly helps to not allow yourself to look or touch as much as you can. I have had MANY urges to inspect everywhere I think I see or feel a lump but I tell myself only once a day in the morning is allowed. I have been able to break the obsession with my neck a bit to the point where I’m okay not inspecting it for several days until I get the urge (trying to make it a week). Still daily with my recently “discovered” abdomen lump but it’s better than constant checking and panicking. It literally can’t grow in a matter of hours or even days so don’t waste your time. And if your brain just keeps bothering you, close your eyes and visualize in your mind the way it looks and feels and tell yourself you KNOW how it looks and feels so no need to reconfirm.