The best time to create momentum is right after a recent finish. Not only will you have the motivation and context to produce the next work; but you will have the juices of satisfaction that only come from completion.
Even if you don’t have time to work or have fully developed ideas, why not just start scribbling notes? Get the next one started and in position –
For those of us with audacious goals mingled with procrastinative tendencies – I find this is best time to build a healthy habit, or jump start a neglected resolution.