Hi all,
Thank you for all your advice and comments, it's been incredibly helpful.
We are handling him less than we used to, as we were concerned about the impact it would have on his feeding, but usually we try to handle him every other day. He was soaking in that picture as he'd just shed so we'd given him a bath to get some stuck bits off, he doesn't soak regularly.
He's eating small weaners, every 10-14 days usually - though we have been wondering if the food is a problem, so any advice on that would be welcome.
Thank you all again!