It's great that your little one is starting to explore different sleeping positions at 3 months old! It's normal for babies to start changing their sleeping positions as they grow and develop. Sleeping on the side with an arched back is not uncommon, but it's always a good idea to ensure that your baby is safe and comfortable while sleeping.
Here are some things to consider:
1. **Safe Sleep Guidelines**: The American Academy of Pediatrics recommends that babies should be placed on their back to sleep to reduce the risk of Sudden Infant Death Syndrome (SIDS). However, once your baby can roll from back to tummy and tummy to back independently, you do not need to reposition them if they roll onto their side during sleep.
2. **Ensure Comfort**: Make sure your baby's sleeping environment is safe and comfortable. Use a firm mattress and avoid loose bedding or soft toys in the crib to reduce the risk of suffocation.
3. **Monitoring**: Keep an eye on your baby while she sleeps in her new position. If she seems comfortable and is sleeping soundly, it's likely not a cause for concern.
4. **Consult Your Pediatrician**: If you have any concerns about your baby's sleeping position, it's always best to consult your pediatrician. They can provide personalized advice based on your baby's specific needs.
Remember that every baby is different, and what works for one may not work for another. As long as your baby is sleeping safely and comfortably, it's likely not a cause for worry. Enjoy this precious time with your little one!
For more information on safe sleep practices for babies, you can visit the following link: [Safe Sleep Practices for Infants](https://www.cdc.gov/sids/about/index.html).
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