Add suicidal ideation+nightmares and that's gabapentin WDS for me at the momentI realized I never really answered your question.
Minor headaches / cold hot flashes / sleep disruption / increased anxiety are the first symptoms most people seem to experience in regards to benzos WDs from what I can gather in case you were looking for symptoms / not general advice.
If you find yourself with a morning headache that feels better after your morning dose or having trouble falling asleep with out your nightcap dose that would be a warning sign.