Definitely increase the estrogen to a therapeutic level!
It makes me so sad how many women end up with osteoporosis needlessly due to under treatment.
Bisphosphonates have some really toxic side effects and have to be taken early in the morning before anything else and then stay upright for a period of time afterwards as they corrode the oesophagus.
They are less effective than estrogen and.have a negative impact on quality of life whereas estrogen improves it.
More than half of people quit taking a bisphosphonate in the first year as they are so unpleasant. Sadly these patients often go without further treatment, many of them women who have been persuaded to come off or not take estrogen, which is then virtually never reinstated.
They also don't help the intervertebral discs like estrogen, nor have the other health benefits eg cardiovascular, urogenital, skin, brain.
In my opinion bisphosphonates should only be offered to women if there's a clearly defined reason why hormone therapy cannot be used, as this is a far superior and safer treatment.
Obviously lifestyle is important but why wouldn't someone be doing all those things anyway - a healthy lifestyle is required in addition to treatment, not instead of.
Both my parents have osteoporosis and they are the typical candidates, slim and health conscious. My mum thought HRT wasn't natural - neither is the metal plate that's now in her wrist!