I totally made myself that same promise and then broke it over and over. It was so hard! It started out as a "i need to add this", "I need to change this", etc. Then when I would see things gone, I would get so excited, like "someone loves me, yay!" that I would need to check it again. It did become an obsession.
The way I feel about it now is, you asked for x,y,z by registering for it. So it isn't like it's a surprise when someone actually buys yous x, so why not keep tabs if it makes you happy? Planning a wedding is stressdul, give yourself this one treat!