https://rightdecisions.scot.nhs.uk/antidepressants-quality-prescribing-a-guide-for-improvement/reducing-and-stopping-antidepressants/difficulty-withdrawing-ssrisnri/ more info for anyone else struggling with medication swaps, discontinuation symptoms, or withdrawals.
Apparently addictiveness means you want or think you want more of it, maybe withdrawals are body feels terrible until you do, and discontinuation symptoms are just whatever your body does without the dose it got used to.
So for long half-life drugs, you can take it on alternating days, as you space out and clear it from your system. For short half-life drugs (like our beloved venlafaxine), that doesn't help the overall process. Random small doses can relieve symptoms though.