Would suggest splitting their meals perhaps and feeding three times a day or invest in a treat ball which you could put some dry food in (or his favourite treats) and let him bat that around trying to get the treats out of it. Will keep him occupied.

Play-'n- Treat™ Balls (2 pack) - £2.50 : Pinky Pawz - Simply ... the cats whiskers!, Pinky Pawz - Simply ... the cats whiskers!

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Kaz

For kittens, joy is for the asking and smiles are for the giving