[lostdog]

Practice for 4 weeks, then go interview. It's useful to practice a bit, but it's more important to just go do the interviews soon. Pick whatever practice makes the most sense, but don't worry too much about getting the exactly right practice. Review descriptions of what interviews will be like generally, and try to solve a handful of practice problems.

The best way to learn to interview well is to interview other people. You very quickly see what works and what doesn't. Of course, it's difficult to just make that happen in the short term.

In the end, you should just go interview places. You'll quickly learn whether you're all good (because you get offers), or if there are any problems to address. Only worry about it if there are problems.