I agree, it's perfectly normal when they are really small, but you can gradually teach them your name. My grandson was the reason I started my daycare so for a while all my little ones were calling me grandma. One of the Moms was picking up her little girl and she called me grandma and the Mom sternly told her my name was NOT grandma. But none of the other Moms ever worried about it if they heard their child say that.