How do you all handle this?

We are fairly new to all this helping out elderly parents and caregiving, but need to find some resources we can turn to for help since we have 3 parents between 80-92 all with different health issues and level of care needed. MIL has been residing with us for awhile now and we believe has dementia (no official diagnosis) but it is reaching the point we can no longer care for her or give her the care she needs. She's stubborn and is refusing to go to the Dr so not sure what other options we have. We have found her meds rolled up in tissues, on the floor, in her pockets etc. so sure she is not taking them the way she should even though she swears she is. She isn't bathing but once maybe twice a week and basically all she does is sleep. The other 2 parents are not far behind as they change Dr appointments and neglect to let anyone know, miss taking pills because of not having the prescription filled etc. We have just reached a point where we need to get a break from at least one of them. There are no other siblings around to help so it strictly us and feel bad but cannot let that stand in the way of the care she needs. I did call the Dr. and they suggested a virtual visit which she refuses so wondering who else if anyone can we reach out to other than just keep thinking she will make it to the hospital when she falls or something similar and just refuse to have them send her back home? Am I awful for thinking this way........Anyway thanks for listening.