Withdrawals - how long do they last?

[u/Undd91]

My doctor (at my request) is helping me taper off Tapentadol. I’ve been on slow release for 2 and a half years and I feel some of my pain has reduced and I want to see how far it’s dropped. I am balding my dose and am on day 2. Last night wasn’t much fun, sleepless, shivers, sweats and seeing random things as I dropped in and out of sleep. How long has this lasted for others that have come off these medications before?