Still on this rollercoaster of anxiety and mood swings. Just had 4 whole weeks of feeling great. But then my period finally arrived and have had a week of feeling like Hell again. Anxiety through the roof. Needing diazepam. Insomnia. Feeling really cold. Diarrhoea. The works

My period was technically over a week late - all my cycles lately have been roughly 25 days. This month it was a 32 day cycle. And when my period came it was really light. Just spotting really. And only lasted 3 days.
I can't go on like this. I really can't. So I am asking my consultant for HRT when I see her next month. She has already explained she would like to start me on an oestrogen patch with separate progesterone feedback. Because I have always suffered with PMS she explained that the progesterone feedback stage might be tricky for me.
Have read on here several times that some women just take progesterone every 3 months to give themselves a bleed. I very much like the sound of this. And to be frank my periods are so light nowadays (only need panty liners and maybe 3-4 regular tampons over 3 days) that I doubt my womb lining will thicken that much.
I don't care how heavy or painful the bleed would be. I'll take it on the chin. I just need these mood swings and anxieties to stop. They are ruining my life and the lives of my husband and children.
How do you qualify for only taking progesterone every 3 months?