Has anyone stepped away and asked for third party guardianship of parent with dementia?

From my previous post you would see that my 83 yo father with dementia (did not seem pronounced but was advancing) had a stroke in his eye and developed Charles Bonnet Syndrome that led to hallucinations.That then developed into all consuming delusions/delerium. He had to be admitted to the ER involuntary for evaluation and is currently in a behavioral health hospital to try to address any of these issues.

Over the past month he showed significant changes and over the past 2 weeks a descent into his hallucinations/delusions that had him trying to sue, barricade against, take photos of, call police, etc. His hallucinations very. With less than 2-3 hrs/day sleep for my father (and myself) it impacted my ability to get my dad to the hospital. A neighbor helped me (because I couldn’t bring myself to do it even though I knew it had to be done) call a police mental crisis team for a wellness check. He sounded so reasonable speaking to the officers and clinician of the team about his delusions for an hour. I kept hoping his saying they go “poof” meant there would be a break in the problem, but then he explained that his nemesis is now magic.

I realize my father can no longer live alone. I have stayed with him off and on for various 24/7 stints over the past year. Have taken care of bills, groceries, pill boxes, doctors trips, taxes, investments, home repairs and maintenance for the past 2yrs+. I also realize that I am no longer making the best decisions for his health and wellbeing. I let him delay going to the ER, answer shop for a magic bullet for medical care, let him delay taking medication, and overall have focused on doing the basics, but really just keep trying to “make everything ok” instead of making the hard health care/living decision with this current crisis. Would likely have kept this going until something worse happened to him or me. I was not eating, sleeping and have had complete decision paralysis, such that in the ER I initially told the ER doctor that my Dad was just having hallucinations, but thankfully came to my senses and was honest with her. After all of the trouble it took to get my Father there for the help he desperately needed; I'm still in denial.

I have engaged an elder attorney about an emergency guardianship as my Durable POA is easily revoked and if my father is coherent enough after this hospital stay, I can’t risk him not being in care. I never wanted to take what seems to me like a sledgehammer to his life. The police took his guns when he was taken to the ER. He had them out at the house. I helped him obtain his drivers license (took him to the DMV and handed the opthamologist’s letter of min. vision reqs of 20/40 over when he kept telling the clerk he couldn’t “hear” the instructions for the vision test and I knew better. I can handle the inanimate/financial part of his life but appear incapable of making decisions that may upset him or go against his wishes, even if I know he is no longer my father from a few yrs ago, even a few months ago. The petition for guardianship will be filed on Monday. He will still be in the behavioral health facility. I have not been able to speak with him since he went into the ER room/area. I cannot ask him if he would like for me to be his guardian and avoid the process, and he said he feels like I have betrayed him, but doesn’t know to what extent (his parting words during the one phone call they allowed him in the ER over night were about his delusions and his envelope of cash that needed to be hidden).

Has anyone else had to decide to put their parent under someone else’s guardianship? He/I don’t have other relatives, nor good friends that would be “close” to take this on. I have been reading extensively about guardianship and this is needed now. Initially it may be temporary. Any thoughts/experiences are appreciated. I know I am not capable but he needs to be safe. He needs to be in memory care and I don’t think he would go.