I'm near your age, healthy and active.
I walk dog(s) 4 times daily. Terriers are quite active. I think hoovering dog hair, daily, is exercise. The stretching sort one gets from pets.
I use exercise equipment when the mood strikes.
It seems to me you exercise enough. Perhaps add a bit on your bike if you believe you must exercise more? Balance pose while tidying?
Have anyone ever hesitated to get help at home because of not much reassurance




