Re: Another autistic child? help
I would continue to sing, talk, smile, even read to your baby just as you have been. Keep up all the interactive things that you have been doing. You might also want to look into a birth to three early intervention program since you have an older child and are seeing these signs. Your school district should be able to give you information about this, or call your local office of developmental disabilities.
You won't know for certain for awhile, but it certainly couldn't hurt to do early intervention right now.