Marginated weight

[Alicia Graham]

I have a 1 and a half year old marginated and was wondering what weight he should be his shell is 10cm long and 7cm wide. He is 228g. He lives in a wooden table and eats mixed leaves (not iceberg!) He also climbs up the walls in his table and tries to climb out. Wondering if this is normal or is it something I’m doing wrong.

Alicia