Severance agreement arrived, need a second opinion

The company sent a severance agreement with a release of claims, and I am unsure what to do. It has been weighing on me all week. It includes health coverage for a couple of months. Did anyone negotiate and succeed?

I asked for two more weeks and a neutral reference. They agreed to the reference and added a week.

An hour with an employment lawyer cost me a small fee and made me feel much safer about signing.