Is there a way to program MS Word to automatically insert a page break after every 150 words?

I’m writing a documentary film script where the voice over narration speed is 150 words per minute. So I’d like to format my MS Word document so that each page contains 150 words, that way each page equals a minute of film. How can I do this in MS Word?

If it’s not possible to do this in Word, can it be done in another program like Scrivener?

Thank you in advance very much for your help.