[Amethyst_ice]

Some hamsters just are late/early risers and while you can sometimes condition them to wake earlier/later by feeding/putting lights on, ultimately you have to respect their natural patterns.

My last hamster would only poke his head out between 10pm and 3am! He was most active between 3-5am so I got used to not really seeing him and when I did see him up and about at a reasonable time, took the opportunity to get him out.

This is the gamble with pets that are more noctournal.

If you really are struggling to both adapt to each others sleep patterns, perhaps it may be best to reconsider rehoming him and getting a better adapted pet?

However, also bare in mind that younger hamsters do tend to sleep more, especially as they settle in