Here are some ideas for you, so you can be better prepared next time....
1. Study CB the evening before the game, to get educated pre-game analysis.
2. Lay out your game day gear on the hotel sofa, so it is ready to go!
3. Gentle vocal warm-ups, in prep for 4 hours of shouting.
4. Get some rest, so you can stay alert through the 3rd quarter blues.
5. Make sure your phone and portable battery are fully charged so you can read CB during the game.