Hi ellerbeck
Welcome to the forum, you might want to have a look at the following FAQ which explains where everything is.
Welcome to Benefits and Work .
Once you reach State Pension age and under go an assessment then you may be awarded a light touch review, we have seen a few members on this forum get this award.
I am afraid that you will have to under go another assessment unless DWP have enough information to do a paper review which can happen but not very often.
Gary