J03, the age gap is abit far. The toys they play with will be different too... So can't really be play mate. Also, ur elder boy is already in pri sch, at least half a day he is in sch. Return home still got home work to do. If wkend u also send him for enrichment classes, Not much time for him left too. My 7 yrs old nephew, I dun even get to see him much on wkends considering my bro stays just upstairs above me.. He has badminton, abacas, swimming lessons, all packed on wkends.