I separated from the Navy in 2015, but didn't claim any issues when I separated because I was considering going into the reserves.

In 2017 I attempted to claim disability due to various issues and got rated at 0% (tinitus, low back pain, etc.).

However, I've been seeing the VA over the past ~2 years due to severe Sciatica (ER visits, physical therapy, accupuncture).

How can I submit a new claim to get a better rating?