I'm attempting to book from US with a stopover in HKG enroute to Japan in April 2020, but seems there a huge blackout of award availability on HKG-Japan leg during that time. Any tips for how to best approach a safety net now and hope the flight I need opens up a few weeks before departure and change to it (AS MVPG here)? I have transferable miles (MR/UR) if that makes a difference.