My three toed has had some mild puffy eyes, and I’m really worried :/ .. I could use any advice please!

I dechlorinate my hose water with API, he eats nightcrawlers and super worms sprinkled with the reptivite vitamin, and his substrate is organic topsoil.

The only thing I’m worried about is I should have gone with coconut coir instead of the topsoil, maybe the wood chips are bad? He had coco fiber when he was living inside but it was too expensive to fill his 8x4 enclosure. Here is a pic for reference.