I need to know if a temporary guardianship agreement between my mother and I will keep CPS/DCF from taking my newborn?

I have known DCF to stay away in some cases if a relative obtains a custody order through family court. You and your mother should discuss this option with the child protection investigator. I am not clear what is involved with the temporary guardianship you gave your mother. It may or may not satisfy the child safety issues concerning DCF. The only way to find out is to ask.