Water in door is not coming out very much intermiient

There is a mesh screen filter in the water supply line where it connects to the water inlet valve on the back of the unit. You can disconnect the line coming out of the valve and try the dispenser to see if it comes out normal. You can disconnect it at the bottom of the freezer door to see if it comes out normal there. If it does the water could be freezing in the door. Leave the door open till it thaws out. Cover the freezer with a blanket to prevent loosing too much cold air.
If you have a water filter it could need changing.