My twins are now 16 months old and I am worried my Twin 1 will have some / has some behavioural issues. Twin 1 is constantly biting and throwing himself around when he is upset. Twin 2 does sometimes but is usually quite chill. Twin 1 also seems not very interested when I try to show him attention, for example singing nursery rhymes and giving him eye contact. He only seems to join in when he sees T2 doing the actions. They started nursery in Feb 2023 and go 4 days a week, I work from home so do most mornings and nights by myself so I feel like I don't have enough time to spend with both of them so I am wondering if I have created these issues. My partner and I are going to try work on having some 1-1 time with each of them on the weekends but is there anything else I can do? I'm ashamed to admit that I bonded with T2 a lot quicker than T1 when they were born... Do you think they have picked up on this?