Are 'in,' 'does,' and 'part' correctly used in the sentence? Can I use 'the time and effort' and 'doing' interchangeably?

Are 'in,' 'does,' and 'part' correctly used in the sentence? Can I use 'the time and effort' and 'doing' interchangeably?

Professor Thomas has said that proper documentation is essential in teaching, and he regularly does it himself. According to him, it might be rigorous, time-consuming on a teacher's part, but it is worth (the time and effort, doing).