Help! Advice !! Anything

So I’m 31 weeks pregnant. And I have two other children. I have a 6 year old son and a 2 year old daughter. My 6 year old is super chill and growing up he rarely even be in my room I have to literally call him

To come here every couple minutes or so cause he will

Literally sit in his room or the living room all day and read or watch tv. But my two year old is verrryyyy clingy. I wouldn’t say this is all of a sudden she has always been a moma girl. But lately she has been WHININGGGGGG it’s so irritating it really started in my second trimester. It’s getting worse and worse. She cry’s over every little thing it could be something as simple as her throwing paper on the floor and I tell her to pick it up and throw it away. I just don’t know what to do at this point because this all seems to be new. What can I do to stop this. Before baby comes.