Yep, I know the feeling. Unfortunately, even with HRT, it's a rollercoaster ride in peri-menopause as treats low hormones & not the fluctuations, which in themselves can be very disruptive.
Our bodies are stressed out, so anything on top of that can get too much.
I've been on HRT for 3 years & have good hormone levels, but I can still get overwhelmed, anxiety, bad sleep, brain fog, mood swings etc. Sometimes the tiniest added stress, that wouldn't have been an issue pre-menopause can blow up symptoms. It's really frustrating!
It's also very tricky when working full-time as peri-menopause often needs us to take a step back & do some extra care.
All I can say is to be kind to yourself, fit in whatever you can to relax & recognise that it's all par of the course. Perhaps you can talk it through with your manager or Occupations Health at work? There may be some way to ease things for you in the moments when things get too much.
I used to take real pride in being good at my job. But sometimes I find it helpful to not care so much if I'm not as on it as I used to be, or care as much that others may think I'm underperforming. It will get better eventually & calm down.....
I ensured that work know & have recorded that I'm having problem symptoms, so I don't feel my job is under threat, even if my pride is. It helps that I work for a large organisation. x