Confession

So I've been with this man for 4 years He has two kids from two previous relationships we recently got married the 21 of Dec 2018 I just gave birth to my first child with him. His 7 year old son is his everything I mean all he does is for him and thats cute but now that we have a newborn I see that he doesn't treat my baby how he treats his 7 year old hes super protective of his son no one can sit on his sons bed or use his sheets etc no one can correct his son or raise your voice at him hes a glass cup that no one can touch so to get to my point with our newborn he doesn't change or give him food unless I tell him him hes always playing fortnite and on his phone like some teenager and barley gives the baby attention as a new mom I get tired of those sleepless nights and hope that he since he is awake playing video games will give our son his 3 am or 6 am feeding but instead he waits for me to wake up and my baby misses a feeding like wtf ? If it was his 7 year old hell be on top of that like no tmmrw is this favoritism already? Or am I crazy