Girls, hi everyone! Please recommend a book about siblings close in ag…

Girls, hi everyone! Please recommend a book about siblings close in age? How to give attention to each so there won't be jealousy or hurt feelings. I'm due soon, and I'm already finding it hard with my little son — he's jealous of me; when he wakes up he looks for me, won't sleep without me ? he hugs and kisses me ? I love it, but I'm afraid he'll hit the baby and do all sorts of naughty things.