And make sure you do your written. I know most people say memorize and regurgitate for the test, but you are already rated. You shouldn't be regurgitating, you should be recalling. Unless you took your CFII when you did the Instrument.
Study your old books (especially the Instrument Flying Handbook) to regain proficiency. Whoever is signing you off for the checkride should sit down with you and make sure you are proficient. Pick someone who can help you teach the info correctly and with good style. I was able to make a deal with my instructor. Ground was free, I only paid him for flight time but I gave him a bonus on my checkride since we were both poor flight instructors.