I own 2 separate solo proprietorships (no employees). I have a solo 401k for 1 business. Can I set up a SEP IRA for the other?

I have two different solo businesses- one as an attorney and one as a real estate broker. No employees. I've set up a solo 401k for the real estate business. Can I also set up a SEP IRA for the legal business? I'm using Turbotax Home and Business 2019.