It is common for babies to need an adjustment period when getting used to a carrier, and sometimes they may prefer different styles or carry positions. Ensure the carrier is adjusted so the baby is in an ergonomic 'M' shape with their forehead at a 'kissable' height, which ensures proper support and comfort. If you are struggling, consider visiting a local baby carrier library where you can test different models, rent them to see what works, and get professional guidance on correct positioning.