My 15 month old daughter has recently (I'd say past week or so) starting half closing her eyes, rolling her eyes back and sometimes tipping her head back too. She does it a number of times a day, but especially whilst in her high chair. She doesn't seem to be 'absent' whilst she does this as she has continued talking at the same time. It sounds really minor written down, but it looks unsettling and I can't help but worry about neurological issues. But then I think it's just some silly toddler thing and I'm overreacting... Anyone that can advise/has experienced this?