If I were you, I will bring them over once in a while (maybe once a month), just so that the children get to see their grandparents. Your in-law's non-responsiveness and bias behaviour to your children seemed to be affecting them.. so I would also explain to them that your in-laws are paying more attention to the baby because he is younger and needed more attention.
Can tell that your children love their grandparents which also show that your in-laws probably doted on them. I would say keep the relationships cordial and hopefully, things will improve when your nephew grows older. In the meantime, just explain to your children not to take it to heart in case they feel neglected. And bring along their own toys when they go over for a visit.
Take care!!!
Read more