My 3 mo daughter doesn't cry for the bottle when she is hungry. I took her to her doc n he was concerned that she might be autistic n said that all babies should cry n be fed on demand only. I wasn't that concern about her feeding because she was taking 4-5 oz every 4 hours, but in the last month she has eaten only 3-4 oz every feeding! She usually finishes the bottle but now I have to burp her N wait to see if she will take it again within the hour, something I haven't done until she turned 2 mo! She gained 1lb since last month n is alert n happy. She started cooing n now she gets easily woken up from sleep n takes 1 or 2, 20-45 min naps bw feedings n she use to tAke 1-2 hr naps too!! First time mom concerned that my daughter autistic! PleAse help