If you have embarked on an accelerated CFI program, the time available to get ready for your checkride is limited, by definition. You must prioritize your preparation and be efficient if you want to be ready when you are scheduled for your checkride.
Your first order of business could be to prepare presentations for maneuvers such as eights-on-pylons and lazy eights. These are the hardest to teach because they are the most complicated, and they are either required or certain to be assigned by the examiner. If you don’t have a presentation ready to pitch on the day of your checkride, you will find it to be very difficult to cover all the elements listed in the PTS and ACS in a coherent and efficient manner. You’ll either take too long, your instruction will be choppy, you will forget to cover some essential elements, you will get some key facts wrong – or a combination of all these problems.
The good news is that there are many resources where you can find that presentation already completed. For ATP Flight School, for example, there is a training supplement for your airplane that contains a neat little diagram of many maneuvers, plus the steps required by the school. With the ACS and PTS for that maneuver, you should be able to throw together a presentation in less than a half hour. If you’re in another program, look at what they provide; you can also use the Airplane Flying Handbook, which describes every maneuver.
Also, if you are going through an accelerated program with other people, why don’t you split up the work? You could schedule some time to watch each other make the presentation, fix what’s missing, and get some feedback on your instructing style. Even better, use your smartphone to make a video of your presentation and do a self-critique. Errors and omissions will jump out at you.
The next presentations you could prepare are those for tasks that are required, such as PTS task II B, Runway incursion avoidance. They’re mandatory so your work putting together a short and targeted class that covers the required elements will not be wasted. Again, if you don’t prepare something you will risk struggling unnecessarily.
The third order of precedence might be to prepare presentations on remaining maneuvers and areas that the PTS requires the DPE to select. If it’s a task you feel particularly well prepared to teach, perhaps you can wing it during the checkride and simply glance at the PTS and ACS to check you cover everything. If you feel uncertain that you can teach a task off the top of your head, then perhaps you could put together a presentation of some sort.
Regardless of how well or summarily prepared you are, you must remember that there is limited time to present all the instruction required during the oral. If you are not fully prepared, you’ll feel even more nervous than you would ordinarily feel during a checkride, and this nervousness will manifest itself as excessively long and possibly confused instruction.
Many people have gone for their initial CFI before you. Do everything you can to be efficient in your preparation and avoid “reinventing the wheel”. Customize what already exists, practice in front of an audience, and you’ll be ready.