I have fit hearing aids for 24 years, and have never met anyone who wore hearing aids part time that was at all happy with them.
If one wears hearing aids part time, every time they put them on, their brain and ears have to start over getting acclimated to them, and that never comes.
More importantly, not wearing hearing aids full time allows one’s speech discrimination to plummet because hearing aids are as much about preserving the ears and the hearing centers of the brain for the future as they are about helping one hear better today.
I fit someone a couple months ago who got hearing aids a little over four years ago, and wore them to church, to the store, and to family gatherings etc. Their data log showed an average of less than an hour daily since they started.
When they were fit four years prior, their speech discrimination was 76%R, 84%L. When I retested to fit with new instruments, 40%R, 44%L Forty percent drop in the ability to distinguish and clearly identify words over four years.