How many pinkies do you have? It's really hard to say the exact size to give him without seeing him or knowing his weight. Sense you have the pinkies I would say give them to him now if he'll take them and then get larger prey and feed him that it five days. Pinkies are mostly water and don't have a lot of nutrients so I would switch him to something else when you can but sense you already bought them you might as well use them lol. Try and feed him multiple if he'll take them
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