Welcome to the Forum, Mumandgp.
As a healthcare professional, there is free training on menopause available to you which is CPD accredited. One is "Confidence in the Menopause" on the Fourteen Fish platform. This was devised by Dr Louise Newson, a well known menopause specialist GP with a large private practice. It has proved very popular. There may be other free courses too, perhaps try the British Menopause Society (BMS).
I agree with Winter, don't get too hung up on the estradiol blood test result. It is best to apply your daily dose of gel after the blood draw, could that have been a factor? You are on a very low dose of gel, so I would not try to reduce it.
JP x