Not discouraging at all - I like people to give it to me straight. ?
I have found multiple programs in classical arch. that either only require experience in Latin OR Greek, some that will let you by with very little experience, and others that require no languages at all. (Of course all of this is contingent on you rectifying the situation during the program.) I've been systematically contacting all of them to see exactly what their requirements are and it really just depends on the program what they'll let you get away with. I should have at least five schools to apply to that might take me. I was already accepted to the one that I had wanted to attend for this fall, but then the funding that I was hoping to get fell through because of the pandemic.
This being said, I am currently working on the situation by teaching myself Latin. I should be done with Wheelock's Latin and reading lower level Latin literature in March, which will give me some experience by the time I start a graduate program. I did want to do a post-bac. but, like you said, they are expensive and I can't afford it. x_x