sorry only you know whether it will be better for you to call vs wait until your next appointment. its a personal choice and what ever the treatment provider accepts thing.

how long an evaluation is can take anywhere between months or years. there are many undetermined situations involved like how long it takes for you to do all parts of the tests, how long it takes to get scheduled to take each part of the tests. how long it takes for the treatment provider to review past records/ files, (example your psychiatrist will be looking back on your files with them to see if you have mentioned certain problems or symptoms in the past to fill out their part of the evaluation and know which extra tests to follow up with and match to your answers, check your files to see what oral evaluations they did on you with out you knowing about it.. all kinds of stuff can be found in records/ files ) then theres how long it takes your treatment provider to send out the tests that need to go to other agencies for scoring purposes, how long it takes for mental health testing agencies to score and return the results to your treatment provider, how long it takes you to do the physical tests that are required (example seizure disorders have to be ruled out, and other things too if you have other mental and physical health problems)

my point there is no exact time frame from starting the process to ending and getting the final results, at the least months and at the most could be years for some people.