Can you do it?
Of course I can but you have to approve more hours.
Whatever you need to get it done.
Give me the deadlines and I will have it done.
Oh, and I also need you to do this other thing at the same time. Can you do that too?
If everyone gets me their work on deadline and I have free reign to work the hours I need to get both projects PLUS my regular work done, I can do it. (In my head I think, there goes my Thanksgiving weekend!)
The life of an independent contractor. Sometimes it ain't so glamorous.