Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to set a routine for your hamster [title] Watch your hamster's sleep patterns. [step] Hamsters are nocturnal, so they will likely only wake up for short periods of time during the day and then they'll be active at night. Keep track of when your hamster is awake by writing it down or adding it to a daily planner.

Ending1: [substeps] Try tracking your hamster's nighttime schedule as well. Watch for changes in your hamster's normal rhythms, such as sleeping on their backs or on their sides. Ending2: [substeps] Write down every waking and bedtime detail. It's important to keep track of when and where your hamster gets up and goes, in case you forget their food and don't know what to do. Ending3: Eventually you should notice trends in its sleep routine. [substeps] An example of a possible sleep routine is rising at dawn and dusk to eat and exercise for a few hours before going back to sleep. Ending4: [substeps] To let you know when your hamster is sleeping, set an alarm. It should go off about 15 minutes before it is normally sleep time.

Answer format: ending1/ending2/ending3/ending4