Try calling him.
I know escorts who always reply: "Where are you? When are you looking to getting together? What do you get into?" and some clients get offended by such questions because they're too invasive...
Life is as complicated as we want it to be. If there's a will there's a way, unfortunately some escorts assume an unresponsive client is shopping around or not serious.
Making plans by text shouldn't be rocket science but some it is. Ask questions and if you don't get answers move on, grab the bull by the horns.