3-year-old son acting like baby; expecting baby in Sept
I need some advice on handling my 3-year-old son. We are expecting a baby girl this fall (Sept) and my son seems overly fascinated with acting like a baby -- he constantly proclaims himself to be a baby (rarely as a "big kid"), is starting to insert more baby talk into his speech (and he's quite verbal for his age), asks for a bottle every day (we don't give it), etc.
We do try to talk up his new role as a big brother as well as all the benefits of being a big kid.
Still, I can tell that he remains uncertain about growing up. Please tell me this too shall pass! Any advice?