Summer vacations take you away from regular life, work, and deadlines. The break is ideally relaxing and focused on activities that you find interesting, but away from time pressures, away from home. After a vacation break, you return unstressed and with a clear head to tackle life and work projects with a positive energy.
A break from a writing project should be like a vacation, so that you can return to your writing with a clear vision of the story. Your voice is hitting all the beats and is informed.
Reading preparation and breaks are invaluable to the writing life. Writing is a creative endeavor that flows better with rest, preparation, and only a little pressure. Let all writing simmer on the back burner while you take a break. The magic is in rewriting.