Hey Chris, three things definitely helped me with AUD, and two of those may not apply to your unique situation:
1. After I felt confident about my preparation for FAR, I booked an appointment to sit for FAR six months ahead. Then, within those six months, I took on studying for AUD, with the goal of sitting for AUD at least a month after FAR. But my plans were scuttled when I failed FAR after the six-month wait. So I had to circle back to studying FAR again, but by then I had a good foundation with AUD. So when I later passed FAR, I only needed minor reviews of AUD to take it on and pass first time.
2. Given that I’m not a math person, AUD presented less difficulty for me than FAR and now BEC, because AUD is mostly literature.
3. The final thing which helped me, and which is definitely something you can work on, is knowing how to answer the research requirement questions on the sims. Those could give you much needed points on the sims and they are fairly easy if you know your way around them. Just remember how to conquered similar questions in FAR.
Finally, I’d say just keep hammering out those NINJA MCQS in AUD and follow the NINJA framework and you should be fine. NINJA definitely helped me get through AUD.
Hope that helps.