I submitted my PCQ in May 2018, and got candidate status July 2018. My application was due 14 November 2019 I think. Anyways, there were no updates to my portal, and I heard nothing from USAFA until 17 April 2019 when I got offered an appointment. If you look at last year's appointment thread (search 2023 appointment thread), you'll see that a lot of appointments were dropped around the end of April...this means, buckle up, it could be a while until you hear anything.
As far as BCT, it's tough. My best advice is to get in the best physical shape possible- but know that you'll break no matter what. It's a mentally and physically exhausting 5.5 weeks, but it will be all worth it. When you get your shoulder boards on Acceptance day, you'll be so proud. There are going to be a LOT of changes to BCT for 2024, so I won't go into much specifics because a lot of it could look very different for you.