It should be no different than what you'd chart in any other nursing setting: subjective and objective data and interventions (if any) that are done.
What's the patient's mental status (AOx4 or otherwise)? What did you talk to the patient about? Were they compliant with their meds? Any med ed given (scopes of practice aside, IMO a LVN better damn well be able to explain the medication they are administering or they shouldn't be administering it in the first place). If the booty shot was needed, why? Is the patient meal compliant? Behavior in the milieu? Attending groups/activities? Playing well with others? Vital signs WNL? Any concerns on either your or their part? And did you have to bring any of these concerns to a RN's attention?
You don't always have to address all of these...pick and choose what is applicable to your patient, your shift and your duties. ALWAYS address SI, HI, unsafe behavior and psychosis regardless, even if it's just "patient denies SI" or "none observed or reported."
Since it's an overnight shift, they will be resting for a lot of it...and if they're resting, you can't help that
Oh yeah: the patient is NEVER sleeping...because how can you concretely prove that just by observation? A safer CYA wording is "patient resting in bed quietly with eyes closed."
Hope this helps a bit!