Bloat in tylototriton shanjing juvenile

[KaySlinky]

I am having a few issues with one of my male shanjing juveniles. I have noticed over the past couple of days one looks like it is bloated, and even his head looks like a frog with a dewlap! But it moves with his breathing and he will open his mouth but only voluntarily. And i have not been able to have a look inside! I know it could be a symptom of dehydration and I have noticed he has not been using his water as much. But temp and humidity are fine. He still has an interested in food and quite active. Was thinking maybe he's also constipated? In which case does anyone know the best way to flush his system? Ive been giving him baths and moved to a more clincal set up. I did give him a smaller feed as he was over due anyway which he quite happily took down. Thinking could he possibly just be fat and i should reduce feed for a little while? Ive done everything I can think of without resorting to medical aids. If anyone could offer any words of wisdom it would be greatly appreciated. Just abit worried about him.

 

[Bellabelloo]

Could you add a photo of him please, so we can see .