How do i get my 14 month old to sleep through the night like he used to?

To help your 14-month-old sleep through the night again, establish a consistent bedtime routine that includes calming activities like a warm bath, reading, or soft music. Ensure that their sleep environment is comfortable, dark, and quiet. Address any potential discomfort, such as teething or hunger, and consider if any recent changes in routine or environment might be affecting their sleep. Patience and consistency are key, as it may take time for them to adjust back to their previous sleep patterns.