I have a 21month old boy and im worried about him being jelouse when the baby comes, my sister had a baby 4months ago and we saw here everyday before n they after she had the baby we went to see her and he wouldnt let me hold her baby he would cry it took about 3days before he would let me & when her baby got to about 2&half months he loved him and too this day he never leaves him alone now lol always talking and trying to play with him, but im scared hes going to get really jelouse and act up alot when i have the baby coz hes use to having all my attention what should i do?