An example of a correct approach into VVTS.
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