Article 7
After a driving period of four and a half hours a driver shall take an uninterrupted break of not less than 45 minutes, unless he takes a rest period.
This break may be replaced by a break of at least 15 minutes followed by a break of at least 30 minutes each distributed over the period in such a way as to comply with the provisions of the first paragraph.
I'm not a trucker, but if your source is https://transport.ec.europa.eu/transport-modes/road/social-p... I don't read it as mandatory, more like a recommendation.