Is AA Sept sitting doable starting from zero audit knowledge?

I am a full-time student studying with a tuition provider. Currently, I am attending AA + FM classes while preparing for PM Sept sitting. My AA lecturer is able to complete the whole syllabus and help prepare us to sit for Sept sitting. However, I somehow don’t feel confident to sit for AA in Sept since I had never sit for 2 papers in a sitting and I know that I am weak at theory questions. For FM I will consider to sit for it in Dec.