Comment by eapotapov

I don't know if it's good or bad news for you, but at least you're pretty lucky to have reached this stage—the majority just get rejected.

From what I know, some people have received their visas after 12-16 months of processing. It will most likely be valid for only one year, though. Eight months is pretty early to expect anything at this point.

Here’s a Serbian-Russian expats visa Telegram group where there’s a US section. You can ask people there about their processing times: https://t.me/serbia_visas_chat

Again, I’d say you’ve had some luck!