UE4 - How to smooth Set Actor Rotation? Imag Att.

Hi, i´m trying to make an AI to avoid entering inside deep water, i added a colision box to my water BP that overlaps them and makes then rotate and find a new location, but “Set Actor Rotation” causes this 90 rotatio to happen really fast, in a fraction of a second, and i would like AI´s to rotate smoother, then change location, how may i smooth rotation? i think i might use a timer, but no idea how to connect make rotator to set actor rotation through a timer to make it happen in about 3 seconds, maybe there is a better idea.

Please help

Thanks man!