I'm essentially trying to make a person do their job without me doing it for them
Why will they not do their job?
I am not sure. I am wondering why they are struggling.
It's understandable to want someone to do their share of their work. However, if they're struggling then you should try to help them out. If you're working together then their success is also your success.
That is why I am dealing with it. I needed to fix it since I'm the one who set the goal.
It is good you recognize that someone needs help. People will recognize you as someone that is helpful and will do their best to give you more important projects in the future.