Don't respond to whining. This rewards the behavior. Wait for silence then reward or let puppy out.
Make the crate comfy with treats and toys. Feed meals inside. Create only good associations.
Keep It Positive
Introduce the crate gradually. Build from short sessions of a few minutes, to longer periods.
A puppy tired from play and training accepts the crate more readily for naps.
Tire Your Pup
Enforce naptime in the crate regularly to manage overtired crankiness.
Play calming music to drown out night cries. Change tunes if pup associates sound with alone time.
Nighttime White Noise
Crate training takes consistency and time for puppy to become comfortable. Stick with it!
Patience & Persistence