My son who is 11 months old gets overprotective/jealous when I hug or hold his older sister (3). For example, he will be on the floor playing with his toys and his sister will come hug me or sit in my lap and sing to me and he will stop playing, crawl over to me push or pull his sister off and sit in my lap. If I don’t let him he will throw himself to the ground and start crying or if I hold both of them he will cry until she moves away. I try to explain I’m both of theirs and he has to share me. We can’t even pose for family pictures because he’s so protective of me. 😭 Advice? Please and thank you.