I don't know your level of knownledge but your Uro looks just like my 1st one just before he died of a small parasite infestation, even after the vet had him getting better (and looking much better). If it is just a case of skinny such as this poor fellow was not the dominant critter in a litter you can try the regular plate of veggies with a couple small (freshly shedding) meal worms or wax worms (even softer but addictive for some lizards). As a baby they seem to grow faster and be more active when they get a little extra protien. Plus at your local petsmart or petco usually have either "jump Start" or "Critical Care" which are both good for putting on a little weight and keeping them hydrated. I don't promote those two pet stores as they don't specialize nor are they cheap but for speed of going and buying what you need fast it works. Good luck with your little Uro.