If you're asking the question, the answer is yes. Do it and commit to it. If you're not seeing progress after a reasonable amount of time, it's possible that you've not found a good fit. Don't hesitate to shop around. Not all doctors and therapists are equal. What works for one of us may not work for another. Treat your doctor as a consultant. They get paid a lot of money. If they can't explain themselves to you and set expectations and milestones, move on. Start with an interview. Ask them for references. Their patients who have achieved fluency will be more than glad to talk to you.