Gets really excited thinking about possible new project.
Starts work on it.
2-3 days interest still there.
Gets bored after and puts project on halt.

Been there done that for sure. Just jump back in to it, squeeze some effort juice on it and you'll be closer :) I did that on an (admittedly simple) project that I wanted to do and ended up finding out most of the work was not actually that hard, just took some reading and I looking at. Finished it way faster than I expected and it made me super happy.