Your son has an excellent horoscope. He is currently under Mars-Venu antra from 31/7/2017 to 30/9/2018. While Mars is solid his Venus is weak but chances of becoming serious and getting a job increase post 31/10/2017 (Saturn will transit over his moon/lagna making him serious and Jupiter will move to 11th house of gains).
Start of Rahu Madasha from 5/9/2019 for 18 years will be an excellent time as his Rahu is placed in 11th house of gains in star of Jupiter and with Mercury as sublord.
He will do well in life.
Astrologer Deepak