That green tub looks a bit too big for the baby, as well as the hide. I have my two year old female in that same exact tub and it's still a bit spacious for her. If not a smaller tub, I would at least give him smaller hides, something that touches him on all sides, like the Reptile Basics hides (my favorite).
Btw, that size green tub (if it is, in fact, the same as the one I have) should be fine for the 1300g female, maybe something slightly smaller for the 800g male. Someone can correct me if I am mistaken.