How should I start chapter two of my story?

I think you need a little bit more background information about the character that's in it now, before you bring in a new character. I think starting chapter two with him waking up would be a good idea, but maybe start with a dream, or him fully remembering what happened the night before or what made him want to go for a swim, in full detail. That way it gives more information about the relationship between Cody and his father and it's a good transition. The dream can startle him awake and then he can start the day.