Do they help? Is 3.5 months too young? I know it's meant to be hard but honestly last few nights not slept more than couple hours and not more than hour at a time in longer than can remember and got so much conflicting advice in head am sure am making it worse and confusing poor ds who just seems ever more fraught overtired and unhappy! Think could manage my sleeplessness if he didn't seem so desperate. Any suggestions on who is good or what we should look at paying?