Getting siblings ready for new baby

Theresa

So you all... I have a 5 year old and 1 year old and I am due with our third in less than 2 months. I don't know how to get my youngest ready for the new baby. My oldest was big enough to understand and wanted to help and was just awesome when I had my second so I am not worried at all about him. My youngest isn't fully speaking and loves his mommy time/daddy time. I am afraid with this baby he is going to get very jealous and I dont know what to do to prepare him and myself for this. Any help?? Advice? Previous experiences? All greatly appreciated!!