Stop doing these weighted side bends.
They will only serve to wreck your back.
You can’t spot reduce so NO one particular exercise will whittle your waist.
But, you can strengthen your core (and also support your back) with things like side planks.
If you really want to lose your menopause belly, here’s a metabolism boosting workout: https://tinyurl.com/exercisegiveaway
OR, train directly with me & my team here: ShawnaKWorkouts.com