Boy I thought you were talking about me.My son is 5 and my baby is 22 months old.And my son ALSO ask me to play his playstation with him or something else and the baby is always right there.However, what I do is either let he baby join in and play with us which is alot of fun.Or I lay the baby down for a nap and then go play with my son.I don't know if the nap is an option for you but my baby loves his crib and he doesn't at all mind being put in there,and when he does he doesn't cry long.Sometimes he doesn't even go to sleep,he just lays there and plays or talks and then I go back to get him when I'm done playing with my son.My son also likes to wrestle with the baby but the baby loves doing it also.The baby will plop down on my 5 yr old and sit there on him while my 5 yr old laughs his butt off.Once my baby held my 5 yr old in a head lock,which completely surpised me...but hilarious also.I explained to my 5 yr old what he could and could not do to the baby.He knows no punching or tossing him too hard,my baby hurts himself more from falling on his knees than his brother does wrestling with him.And I don't know about your sons school but mine just recently informed me that in pre-k they are no longer allowed to try and 1 on 1 teach them,they said that they learn from play and his teacher told me that if they were caught trying to sit and teach them that they'd get written up.Sounds pretty ridic. for a school to do that but maybe you can throw in the learning when you play with him.