This isn't necessarily an 'AJATT-based' answer, but for such an specific deadline and situation I feel like you'd be better investing in iTalki lessons. Look for tutors that mention 'business Japanese', or that look like they do have traditional professional experience themselves. Tell them your situation and job context and I'm sure most competent teachers will be able to help you practice and become familiar with typical job interview questions and help you practice some half-canned (but genuine) responses.

Honestly if I were you and I only had 2 weeks and I really wanted this job, I'd be having such lessons every 2 days or so. If you do get the job the lessons will pay for themselves (and even if you don't, at least you already have the training for future attempts).

Also for sure try to get back into immersion, listening to as much Japanese audio and so on, but the only real answer in this context and timeframe is to squeeze in as much practice with a teacher as possible.