Very often, when no improvement is seen, it's either the wrong remedy or not enough time is given to see any changes. It's also possible that there are other underlying issues that need to be addressed. I am not a bach practitioner, but there are lots of sites that will list the remedies by condition. And there are usually more than one remedy for each condition.
If I were you, I'd mix a bottle with those other remedies too and see how it goes. Good luck.