Most Quran plans die in the second week, and almost always for the same reason: the portion was set by ambition rather than by an ordinary Tuesday.
Set the portion for your worst day
The Prophet ﷺ said the most beloved deeds to Allah are the most consistent, even if few. Pick a portion you can read on a bad day — half a page — and let good days be a bonus rather than the standard.
Track it honestly
One line in a notebook, one mark a day. The record is not for anyone else; it exists so that a missed day is visible before it becomes a missed month.