Hey Alexa... Call 9-1-1.
Let us know how it goes, any type of mental block sucks.
I'm digging the work-around plan though, that's movement in itself -- however small it might seem. I can see past ideas becoming the foundation for a totally different creative venture unexpected.
You can be on some Robert Frost shit and take walks -- I don't know, helps me clear my mind.
And as a firm believer of "the process", I know you have what it takes to succeed.