How to correctly position the baby's knees in the Baby Carrier One Air when they are below the buttocks?

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This situation is common with very young babies. The ideal "M-position" (legs in a squat, knees at or slightly above the buttocks) is crucial for hip development. Here are the main adjustments to check:

Check the newborn positioning device: The Baby Carrier One Air has a closure system at the top that activates the newborn position. Make sure it is fully closed — this raises the seat and supports your baby higher on your chest.
Use the leg straps: At less than about 4.5 kg, the internal leg spreader straps should be attached. Without them, a small baby sinks too low and the knees drop. Look for them inside the baby carrier.
Seat depth: Before securing your baby, use the "tucked pelvis" technique: gently push your baby's buttocks to the back and deep into the seat panel. This naturally raises the knees into a squat position.
Height of the baby carrier: It should be worn high enough so that you can kiss your baby's head. If it is too low, the baby sinks and the knees drop.

At 9 weeks, it is likely that these four adjustments need to be applied together. Once corrected, the knees should be at or slightly above the buttocks, in the characteristic frog position.

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