Advice:
During your 90 day zombie retreat do not :
Perform any work whatsoever, use your time wisely and hustle for external jobs
See if its possible for your mgr to approge the cost of a course (depending on your relationship)
Forget current projects , your work will be delegated when you leave so why not sooner?
Internal job openings are a sham you are on an ever growing hit list 'do not rehire'
Network network network (past collesgues or clients)
Update linkedin profile and resume
Backup all your data and i mean everything
The right mgmt service can be useful for those looking for assistance with resume building and interview skills
Do not train a replacement or perform a knowledge transfer to your replacement offshore or a backfill
Say goodbyes throw a party
Take some time off go on vacation plan the next chapter of your work career..
good luck!