Whenever I'll open a topic with him, he can't seem to relate and wants to change the topic instead. Why does this happen? And he said I am acting like a child..

Mmmm waiting for a man to understand you.
That is one long line.

Children often use name-calling
"acting like a child", as a tool.
I see he is onto this.

Huh, I don't get it.

What should I do? I am trying to understand him in the best way I can so as he will not say that I am childlike.

I am with my man for almost 6 years now. Before every little problem I'll share, he has say on it and give advice. But now, I think he is preventing me from telling him about my worries and will just insist to change the topic. He somehow changed and I don't know what to do.. Please advice. Thanks.

after six years he might be comfortable in your relationship and feels you should be too. some people say "if it isn't broke, don't fix it"

Obviously we don't know the whole story so we can only speculate. Still, after reading the posts, here is my (quite possibly wrong) interpretation.

He thinks you worry to much, and that you create your own drama. After 6 years, he likely has been through this a number of times, and is just getting tired of it. In his mind, he likely thinks that it is you who has changed, and that you need to settle down and relax. It's beginning to stress him out, so now he wants to avoid it.

The point is, you need to look at the situation as you know it, and then view it from his perspective. After 6 years, you should have a good idea of how he thinks, especially if you have always talked about problems and gained advice in the past. So maybe he feels that you should understand him enough by now that you don't need to talk about every little problem.

Just a stab in the dark, but I hope it makes sense.

he's moving on, so should you!

$.02

not a good sign.

Love ain't that hard Honey.

If love is a struggle. Then it ain't what you are really looking for. It is wanting something that ain't gonna happen. We have all been there and done it.