I think he is too old na to separate from his parents...weaning is the hardest part.
I WEANED myself as early as 16year old when i went a university so far away that I go back home only on week ends then 2x a month then 1x a month and then whenever free na lang when i was already working.
things I learned from living alone at a very early age was WAY BETTER than my siblings who until now (40+ na sila) are still living with my dad (somehow it was good for my dad too kasi merun siyang kasama sa bahay)...pero they (siblings) have their own families now so the house was a bit congested and magulo ang set-up - "only one king per castle" as mentioned earlier by another poster.
while me, i'm very happy with my "castle" and i also plan to "force evict" (borrowed from Otep's concept) my kids when they reach college...para matuto silang tumayo on their on feet at hindi umasa sa akin.