I mean they were pretty clear they didn't care about the money. Emailing daily to check in on progress is good enough. I've been in a similar situation. The manager isn't really concerned about the money. They just need someone to justify their expenses.
> We need your full undivided attention to complete this project. For the duration of the contract, you will work exclusively with us to deliver result in a timely manner. We plan to compensate you for the trouble.