Another little update....
The very worrying waking up, in the middle of nightmare/dreams, and me believing them to have been real for several minutes, even once awake, seem to have thankfully ended. The weird episodes, where I lose all the strength in my muscles, where I simply cannot be comfortable sitting lying down or anything, where I feel too hot then cold, and are much more frequent, sometimes several times a day, but mostly shorter.
When I feel one coming on, and feeling too hot, I put the fan on full blast, until it turns into a shiver, then I feel much better, just cold.
I've had a call from the hospital PD team, confirming they have me on the list for the catheter installation op. I have also got a phone appointment, with someone who already on the PD system - arranged by the Kidney Foundation. You can't beat chatting with someone with personal experience.