It’s human nature to wait until about a week or two before you want a project done to contact your painter.
BREAK THE RULES!
Maybe I’m trying to be a little bit humorous here, but it does seem to be inevitable that people wait until the last-minute to get something done. Then, they want it done right away. The same is true for painting. It usually takes longer than you expect, so don’t wait until the 11th hour to get an estimate and hire a painting company.