For me peri/menopausal palpitations seemed to occur as a result of wildly fluctuating hormones and HRT with a higher dose of HRT making them unbearably worse. So more HRT is not always the answer.
All the usual suspects like dehydration, caffeine, alcohol and stress can trigger them off more readily, so it's a good idea to manage these things more closely at this stage of our lives.
Hope they calm down soon.