Hi sir, I got twin baby girls in June 2021 now they in 6th month they born in 31 week (premeture babies) one baby is responding well and eye contact she is doing Well as well and another baby also some times responding some times not responding but she is not doing eye contact very rare she is watching when we call so what is the next step, she had her eye checkups and doctor said her eyes absolutely fine. So please suggest sir what to do.