Because the water takes your weight in aquafit it doesn't help bone health. But it will improve cardio, muscle strength and agility. It can be an intense program that is fantastic but it won't help reverse osteopenia or prevent it.
https://www.betterhealth.vic.gov.au/health/ConditionsAndTreatments/osteoporosis-and-exerciseMy program for osteopenia reversal was set by an exercise physiologist.
There is also an online program you can do through the bone clinic if interested.
https://theboneclinic.com.au/onero-online-home-program/