Thanks for posting on HCM
I believe as your blood pressure has normalized, your doctor does not deem it necessary to continue on bitherapy and instead place you on single antihypertensive medication
H is telmisartan
80mg + HCT 12.5mg as combination therapy for hypertension
. If he has decided to place you on only telma (which comes as telmisartan 20, 40 and 80 mg dosages as you rightly said). Normally you should continue with telma 80mg but it is advisable to talk with your doctor first before taking.
Take note that also stepping one of the drugs could cause back a relapse and so daily BP measurements at least for the first few weeks of starting telma is recommended. If BP starts increasing then you will have to go back on your previous regimen.
Hope this helps