I was told by my GP that the anxiety side might take longer to settle, and it did, went from having a nervous breakdown, extreme elevated anxiety due to prolonged difficult life circumstances to pretty normal emotions. I do wonder if your dose is enough though. I did manage on 75mg once it kicked in, it was about 8 weeks in I'd say before I started to think I felt more normal. I think adding another 37.5 dose might be an approach given bodies are different and your anxiety is pretty embedded.
I get that you are worried about coming off the drug, and I agree it's not one where it's easy to miss a dose although all that happens to me is I get tingling lips and face and feel a bit odd, but there are lots of protocols on how to taper very gradually, I mean over months or years. Many GP's don't know about these or how to taper this drug so it's worth looking at those. I'm tapering off and then I've stopped at times where stress has risen again and I'm happy I'll be able to get off it again.
I would go on it again though if I ever get in that non-functioning state again, it does seem to work every effectively and I like knowing it is out there, if that makes sense.
I hope this or something else works for you, I think this will work as it gives your body a bit of time and space to start calming itself down, and you can use other things (nature, meditation, adjust life) once that's been achieved but it's so hard to do that when your adrenaline has been running high for so long. I'd also recommend Self-Help for your Nerves by Claire Weekes, very old but full of great wisdom of how to live with anxiety. You can get the audiobook and hear her lovely old-fashioned Australian Queen's English accent speaking to you.