Writer's myth: You should never be bored with your writing. If you're bored it means your writing is perfumed garbage.
Nope. Wishful thinking. :-)
Here's what the great American novelist F. Scott Fitzgerald said: "Boredom is not an end product --- it is, comparatively, rather an early stage in life and in art. You've got to go by, or past, or through boredom, as though through a filter, before the clear product emerges."
Unfortunately, that's perfectly true. You've got to go through your boredom to get to the other side. So keep going, until you break through your boredom to renewed inspiration and creativity.
At the moment I'm intensely BORED with not one, but two, book projects. I'm bored, bored, bored. I don't want to reread them, look at them, or think about them.
But… I know that this is just a stage.
So, to humour my inner baby, I'm taking a week off from the projects and reading and playing computer games.
Then, bored or not, ready or not, it's back to work… even if the two projects are perfumed garbage. :-)