I think that's plenty of notice.

In my case, since I'm male, I will need to give parents more reason to use my services. One of the differences I'm going to be doing is having a backup person to take my place in case I get sick, or for when I take time off. Normally, the parents should have a backup, often family or friends, but they can't all do that. I need to go above and beyond normal services if I want a chance to succeed.