I suppose it's ok but it sounds odd. You'd only say 'Please wake him up'. The 'from sleeping' is redundant - what else can you wake someone from?
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Nona The Brit.................. what else can you wake someone from?
Day dreaming?
AnonymousNona The Brit
.................. what else can you wake someone from?
Day dreaming?
'wake' means to 'stop someone sleeping'.