I will chime in if only to advise to be careful. Im in a similar situation myself. Key points to consider, the main one is to get help, personally, i don't trust VA docs but I am 0 for 4 in that respect. Secondly you only get rated for the predominant mental ailment no matter if there one, two, or two dozen. However, they are supposed to rate as close as possible to the main cause if not discernible then they are to code and rate to a similar or as close as possible to the rendered diagnosis'
With the fiduciary business, I can't advise to go along with that. JMO. From my experience so far the VA is not out to help the Vet in its entirety, hence the appeals, and all the bad press of VA's shenanigans. For the credit I do give the VA for what positive they can do the earlier will not change. Those are just facts. Look at their track record and I'll rest my case on the numbers.
I'll advise to stand your ground on getting treated, that by far is the most important. But please consider all the ramifications of the course you take regarding claims. If you are deemed a danger to yourself or the general public I am not sure that would be in your best interest. The VA has been known to do this, and they will if the opportunity presents itself.
JMO, even if twisted a bit.