I agree with what was stated below. When I was a director at CSC a year or so ago they seemed to love RIFing people as soon as they returned from disability. I personally saw 2-3 cases of it in my last year.
They also really seemed to love letting people go right around the Holiday season.
And making you take vacation at year-end - even if you had none banked. They would 'generously' let you borrow (go negative on) vacation days to meet the mandate.
In my humble opinion CSC senior executives were truly a nest of thieving, immoral yes-men led by a soul-less, selfish monster. DXC seems even worse yet from what I read here. It's frightening what they are able to get away with in the US.
Leave on your own terms. Just do it. Do not wait for the hammer to fall.