I am in a rather worrisome spot, I believe. I have been a PhD student for 4 years now and I have been doing active research for about 18 months. I am well done my classroom requirement. At first, my professor did respond to me and we had regular meetings either every 1 or 2 weeks. Recently though, I have gotten only silence. This seems to be reverse of what I read where at first students are ignored and then appreciated as they get along in the process. What can I do? I certainly am not ready to quit, not now, not at this point. I really don't need help in the research I am doing or knowing what I am supposed to do, it is really just the more administrative tasks of signing up for research credits, forming a committee, having a well-defined task which is mine and mine alone and of course defending at the end.

It might be that your supervisor thinks you're fine and don't need much help. Tell them what you from them and see if they will provide it.

Can you contact the admins? Or speak to your second supervisor about it.