How to get from ‘almost there’ to ‘I’m there’ ?

I’ve gone part-time in my salary job, so I’d have more time for my WordPress Developer ‘side-hustle’ which I hope to become my full-time work by next year. So far, I’m not making enough to cover all my expenses. So I wonder about getting another job in order to take the pressure off, or if it’s best to keep going because I’m so close! I’m on the edge of it working, but feel slightly stuck with narrowing /deciding which skillset to sell, marketing to a target audience, and executing my plan (probably have a bit of perfectionism/ fear). How do I go from ‘almost there’ to ‘I’m doing it’?