Re: Capt. Ido learns to steal thread ideas (and also draw)!
I've had them kinda flat out days before. My advice is just lower your standards. Grab a pen and paper and do a five minute crap sketch before bed; it's better than losing momentum. There's no minimum for quality.
One is the loneliest number that you'll ever do.
Two can be as bad as one; it's the loneliest number since the number one.