It's true that all FSW applications got transferred from BJVO to HKVO in late March. This seems to have caused some delays for applicants whose files got transferred, but from what I've seen, not so much for those who originally applied to HKVO.
As your second round of medical exam did not get cleared until March, and since your application is still within the average processing timeframe (currently at 11 months), I don't think there's much for you to do at this point. It looks like VOs can still run security checks after medical results have been cleared (and this is happening for some applicants), so this could be one of the reasons why you haven't heard anything yet.
Having said that, I think the HKVO has been pretty good at keeping in line with the stated processing time. So if everything goes according to plan, your application should be finalized at the latest in June or early July. That should give you some, if not sufficient, time to prepare for Fall entrance.