No. I've had a quick scour round for info and found nowt.
Trying to find info about this on mainstream official channels is drawing a total blank.
If they are running short for second doses they're definitely not letting on, but still promising that everyone due a second dose will get one within the 12 week timescale, same as England.
Let's just hope the glitch up there is down to something else?
Suggest you go back and pester your GP, Bill.
Don't give up on this. Something definitely doesn't sound quite right.
You could always try the very old fashioned letter writing trick and drop it off by hand at the surgery?
Worked extremely well and got instant results for me