We have been married for 14 years and have two kids, but my wife is increasingly getting involved in my kids life and studies. So much that she has started ignoring me. I feel very lonely. How do I get her attention back?

Get involved together, show her, you also care about their life and studies, so you all have common topic to talk about. Once start to communicate, slowly can communicate other things too. Go out for dinner more, while kids enjoying their dinner, you can communicate more with ur wife on other things too.