Hello

Need some help/tips how to debug a big project.

I have a solution with more that 180 projects inside, with several dependencies between them, so every time i change something in one of the projects and i try to debug, i face two problems:
1 - If i didn't build the project and try to Debug i get the "no symbols loaded" for the page where i changed the code
2 - If i try to build the project, if it's a project with several dependencies it will take too much time to build (several minutes), and all of them have several dependencies

In the first case, i though that i can attach a process, but after trying to attach several processes w3,ie, the debugger doesnt stop in the breakpoints, don't know if this works this way, or if i'm attaching the wrong processes...
In the second case, i don't have another option, just wait...

So what should i do to speed up my work? Or what are the common practices to handle this kind of situations/projects?
It doesn't make sense that i have to build the project every time that i need to test some changes in the code...

Thanks