One of my best friends has an extremely feminine face, and he's unfortunately lost all hope of passing without hormones. Tips and Tricks listed online can only go so far. I think he's resigned himself to not passing right now, but I know it's extremely hard to accept and it still upsets him a lot. Several of my friends are this way, and it is somewhat common. I know there are plenty of guys who NEEDED hormones to pass, but sadly, not as many of them make posts about it, probably because they aren't excited about themselves like the guys who pass a lot pre-T. I wish I had some good advice to give you, but I was never in your situation, I only know people who are :C
I can sort of relate though, to an extent. Pre-T I actually passed about 75% of the time though. I started T in September, expecting that number to go up, or at the very least, stay the same. However, I was sorely wrong. My passing dropped to 0% by the time I was on hormones for 4 months. For over two months I never got gendered correctly a single time. I finally started to get a few 'sir's here and there at about 6.5 months. I am still hardly ever passing and I am nearly 8 months on T now. I still get unbelievably excited about a 'sir' when I used to be so accustomed to it. People told me it was because I dyed my hair, however, I cut the dye out and it barely helped at all. So I don't know what's wrong. It is so incredibly discouraging to once have passed, but not once I started hormones. So in a way, I can relate. I'm not doing anything wrong, I've tried everything I can to fix it, but I simply cannot pinpoint what about me screams 'female.' Every single person I ask tells me that they cannot understand why I don't pass, and while I know they mean well, it actually really hurts, because as you said, I am doing everything I should be doing to pass, but for some stupid reason, it isn't working.