Once you figure out the husbandry issues and all using the tips provided above, and he still won't eat for you, go live. My Dumeril ate his first 2 f/t meals and stopped for 3 weeks until I gave him a live mouse (Dumerils are known to be shy eaters like bp). Gain some weight on him before trying to switch to f/t. 100g at this age seems a little scary low to me but that is just me.
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