Developmental issue. Like come , give.

My (22/12/18...dob) 14 month old baby not started mimicking us and not follow simple instruction like come , give ...it look like he completely ignore this. Not making gesture clap , wave..he rarely responded to his name but i call from another room he come towards me but not every time,  generaly i for from his sight he responded but i call from beside to him he rarely responded. his new born hearing test done that was fine.some positive thing When i sing song or rhyme he always responded and make eye contact for some time . He does hifi when i raise hand to see he raise his hand . I talked to his dr. She says developmental delay and suspect autism so we did early intervention no red flag come but lot of concern point is there . he is bit low to average point . They asked me to wait till 18 month if prob is constant so there ll be red flag for autism.. Can my child ll be autistic...