The VDEV is not always correct. Always cross check the VDEV with your own profile calculation. If you are high on energy, always make sure the thrust remains at IDLE.
The A320 Descent Energy Management book is available here:
https://www.amazon.com/Practical-Descent-Energy-Management-A319/dp/B09M5B12XF/ref=tmm_pap_swatch_0?_encoding=UTF8&qid=1637766049&sr=8-1
The generic jet version of the Descent Energy book (Jet Aircraft Descent Management) is available here:
https://www.amazon.com/dp/B0CJRH8YF6/ref=sr_1_3?qid=1695638653&refinements=p_27%3ATjeerd+Schouten&s=books&sr=1-3&text=Tjeerd+Schouten
The Radio Telephony book is available here:
https://www.amazon.com/Practical-Airline-Telephony-Tjeerd-Schouten-ebook/dp/B0BCFHV55D/ref=sr_1_1?crid=RVL2QF5YEYVN
