You can do this either within ABAQUS cae OR BY MODIFYING your input deck.
To do this in CAE, use the LOAD module for applying loads and Boundary conditions.
Try specifiying the damping factor within *static
that is, *static,stabilize,factor=1e-06
Try a multi step analysis, and for each step reduce the damping factor. Therefore you may want to try:
*static,stabilize,factor=1e-06
*static,stabilize,factor=1e-05
*static,stabilize,factor=1e-04
down...