I know this isn't the answer you want, but xyrem/xywav may very well not be for you. My partner and I both have the same diagnoses, however he is bipolar as well and I am not. I encouraged him to try xywav anyway when it was prescribed, and both of us were very optimistic, as it's often talked of as the only saving grace for narcoleptics.
He held his hand in front of my throat and I watched his face while he very strongly willed himself not to choke the life out of me. He laid and stared at the ceiling for hours, trying not to stab himself to death. He said VILE things constantly, screamed, sobbed, took his dose then got so antsy that he drove multiple times on it, illegal and dangerous af. He was nowhere near himself, but didn't communicate to me that he felt the xywav was responsible and wouldn't listen to me when I said so, because it gave him a "really good high" that was probably mania. After I flushed it while he was at work and he had cleared it out of his system for a few days (which was a fight wherein I had to threaten to call his doctor and have him banned from the rx instead and beg that he just please let it clear out and THEN see how he felt, refill it if I was wrong) was when he told me how bad it had actually been. He was spending the entire day fantasizing about picking a random small town, and killing enough people to be remembered in history. He was restraining himself from killing me, people at work, random drivers, fast food workers, himself, constantly. He had severe mania symptoms to the point I fully believe he was delusional more than I've ever seen him, multiple times a day. Your doctor is not wrong to not give you that medication while living alone. It's a risk for anyone, but especially for you. He was on it for less than a month and spiraled very quickly. If I had not been monitoring him and willing to take away something that was HIGHLY addictive to him because of the mania it produced, followed by the worsened depression he "needed" to overdose on it to fix, who knows what he would've done and to who, including himself.
Please find someone who can stay with you, or even multiple people who can take turns, so that you are not home alone until you're leveled out and definitively stable, before you ever touch xyrem or xywav, whether you find a doctor willing to prescribe it rn or not, I'm begging you.