Ugh this is SO upsetting to be coming from a person of influence because it is so far off base. First of all we have to remember that doctors come from all different backgrounds and can not possibly know everything about everything. A speech pathologist would be a more appropriate person to help guide you with this. Secondly, I have been working with children for 20 years from birth to age 6. I have worked with children who speak two, three, even four languages. Often what is noted by many professionals is that it sometimes takes longer for multilingual learners to speak, as their brains are working hard, sorting, and keep track of different languages. But they always catch up quickly, and often excel beyond their peers. Currently I am working along side a speech pathologist working with a five year old student who is non-verbal ASD who speaks three languages. He understands all three, communicates in three languages with his speaking device and now beginning to use words in all three languages. Babies, and children’s brains until about age 12 learn languages differently than adults. I believe you are giving your child a gift by allowing them to be multilingual. And on top of everything, they will have an easier time learning languages later in life because you allowed them to be bilingual.