Looks like I killed the Kveik with my Marvellous Medicine Gruit, took months to get from 1.098 to 1.022, still very sweet so I added some Mangrove Jack's Mead Yeast as I know it's an absolute beast. Made a starter to try and not shock it too much, seems to have worked as we now have a slow and steady bubbling.
Dandelion & White Dead Nettle Ale which I lost half of when the shelf collapsed had finished at 1.000! First time I've had a Cawood Yeast manage this but might be because it was only 3.7%, anyway I didn't know quite what to do with half a demijohn so topped it up with my Hawthorn Flower syrup and water, upped it to 1.042 and the Yeast kicked off again within an hour. Should be an interesting beverage.