There is no luck factor applicable in VK success, there is only practising and practising patiently till you get results.
The combination you have used is best.
You can charge his study materials like books/stationery with STUDY SERUM
Also you need to work on the root cause i.e. addiction to video games.
You can include ANTI ADDICTION SERUM with the intention to de-addict from video games in yr combination.
You can even charge the cell phones or video game instrument that he watches through with AAS. Check the hyperlink, how AAS can be used and how it helps
If VK healing is done with patience, it surely gives the results which a person best deserves.