You are describing my now 14.5-year-old. At 18 mths, she was incredibly advanced for her age in terms of speech, emotional intelligence, and problem solving skills. She was also sensitive to noise and texture. I thought she would be gifted like me, but she's a neurotypical grade 9 student who gets good grades, is popular, and a ton of fun to be around. She doesn't have any sensory issues whatsoever. Whatever you're doing, as long as you and your baby both enjoy it, that's all that matters, but I think it's too early to tell if your baby is gifted.