It is very difficult to gear up for a temporary increase in demand e.g. additional planes take 14 days to be delivered, etc
Basically you just ride the profit wave until it is finished, not much else that you can do.
Minor changes -
- ticket price increase if LF are good
- delay C checks (risky strategy but can be ok for maybe 7 days....but use this at your own risk as it could major backfire....lol)
- no seat configs etc during the 'good times' maximise the plane availability