People who actually care will be okay with being told "This isn't helping. Please just stop." But that's not what the vast majority of people do.
The vast majority of people want it acknowledged that they are good people because they care about you and are trying to help and all this shit.
If they cared, they would drop it when asked instead of doubling down on trying to demand that you make them feel like a good person for fucking with your life and trampling your boundaries.
I also have a serious condition. No, most people absolutely do not actually care about my welfare.
I have tons of firsthand experience with this and I'm not budging one inch.