Its that awkward weather where I dont know if im dressing my 3 mo baby too hot or cold at night. How do I know if shes too cold? Worried she'll get sick

Dressing baby. Dress your baby in the same layers that you would be comfortable in - a T-shirt or onesie, a shirt and a sweater. At night, a T shirt or onesie and a baby sleeping bunting over it should be adequate. Maybe another long sleeved shirt underneath if it's chilly. Since you can't use blankets or pillows, the bunting is going to be the blanket. A cap or hat will also conserve body heat.