As Rusty has said--------File your claim on the V.A web site that your condition has become worse.The date you file will start the clock running. Also by filing on line you will have confirmation of the date and time that you filed as the V.A will send you a confirmation e-mail---your proof in case your claim gets lost in the shuffle. You will receive written up-dates about your claim and they could request any new information that you have. Also they may set up a C&P exman for you also. My last two increase and Agent Orange I filed myself. Turn around time was 3 months for the A/O claim for hypertension. It is good to use a VSO if you desire, but I found that you are your best advocate. Good luck and keep all your info that you file and also what the VA sends you.
