Preparing a switch between BCG to Bain

Hi all, I’d appreciate your advice on preparing for a switch from BCG to Bain.

I’m currently at the consultant level with about 1.5 years of experience. I’ve gotten a bit rusty on casing, so I’m planning to brush up ahead of interviews. Specifically, I’d love your thoughts on:

1. Given that I’m working full-time, what would be a reasonable preparation timeline, and how should I structure it? This will affect when I schedule interviews. I was considering interviewing in ~2 weeks and doing 4–5 cases plus some targeted drills given the limited time—does that sound realistic?
2. How should I adjust my preparation as an experienced consultant moving to Bain? For example, should I prioritize certain areas (e.g., structuring, business judgment, behavioral questions)? Also, are there any notable differences in Bain’s case style compared to BCG that I should be aware of?

P.S. Looking for coaches from Bain who has been Bain's interviewer and is familiar with Bain's case styles, including Bain's "written case". 

Thanks so much in advance!