The plant poinsettia doesn't require watering everyday and watering the poinsettia plant everyday could kill it.
Poinsettia plants usually only require watering once every week which is usually enough and you can tell when the poinsettia needs watered by the weight of the pot that it's in.
When the pot that the poinsettia is in gets lighter in weight then it's time to water the poinsettia plant again.
Sometimes it may need watered twice per week but most of them only need watering once per week and be sure to keep them away from drafts and heating vents and place them where they getting plenty of sunshine and light to grow and thrive properly.