Yes, it is perfectly okay to sleep with a plushie if it brings you comfort and helps you sleep better. Many people find it comforting to cuddle with a soft and plush toy at night, as it can provide a sense of security and ease anxiety.
However, it is important to keep in mind some safety tips when sleeping with a plushie, especially for children. Make sure that the toy is age-appropriate and does not contain any small parts or loose threads that could pose a choking hazard. Additionally, make sure that the toy is clean and free of dust and allergens, as this can trigger allergies or respiratory problems.
In general, sleeping with a plushie can be a harmless and comforting habit, as long as appropriate safety measures are taken into consideration.