Does your attorney have a secretary or paralegal? If so, please speak to them. Let them know that you'd like to be informed immediately when a deposition is scheduled and of all deadlines on your case. If your attorney has no office help then you must change attorneys.

Usually local bar associations provide referrals. Please don't let prospective new attorneys decide if you should change lawyers. That's your decision. If you are impressed with one of them, ask them to take over representation of your case. Your current attorney may have a good reputation but it does not sound like they are doing you right and it also sounds like they are fading mentally and thus cannot provide you with sound legal service. You must take the bull by the horns and find new legal representation. Please think it over. Good luck to you!