Hi and welcome to CB!
My coaches usually get me to move down a bit, for example, on beam if I'm scared of a backhand spring on a high beam and I wont go, then my coach tells me to put mats under the beam or do a couple on a lower beam. On bars I would usually get spot or go on the pit bar. For floor, I do a couple into the pit and vault I ask for spot or ask to do some drills to get over the fear.
Hope this helped!