Hi KitCat, a 3-word message would be great if it conveyed sufficient info to end the dialogue. "Waiting on you" doesn't achieve that. I don't see a business sending a message like that. I see an ongoing exchange after--"On what?" I'm with Thorton and LH to clearly state what is needed to continue with this approach. I don't see any reason to give him the comfort of telling you what you are / aren't doing with your attorney.

"Next is for us to meet to sign the papers. Let me know your availability."

+ I assume you've already e-mailed whatever you want him to sign and he agreed to sign it? Few would sign papers on-the-spot without seeing and considering them in advance.

+ I assume you spoke to your attorney about any signing requirements, e.g. witnesses or notaries.