Ok so can I PLEASE get some advice!!!! I have a 10month old daughter and I am 33wks pregnant.... when I have my son she…

Ok so can I PLEASE get some advice!!!! I have a 10month old daughter and I am 33wks pregnant.... when I have my son she will be 1yrs old... how do I help her transition from being the only baby to being a big sister. She currently refuses to hold her own bottle she likes to be held dam near 24/7 and she gives everyone who tries to change her diaper a very hard time.... please help any advice is great advice and yes I know her being super spoiled is me and my boyfriends fault but she was our first and she’s the one we learned with and honestly we will probably spoil our son just the same.