Sounds like others have already covered similar ground, but I'll add mine anyway.
If you're down 107 pounds and holding steady, not gaining, the medication has clearly worked well and is still working, it's just normal to feel like it's stalled at this stage. Being a full year in matches roughly when a genuine plateau shows up, where the drug's main job becomes fighting your body's pull to regain rather than driving further loss. That amount lost, from 332 down to 219, works out to nearly a third of starting weight, which is an outstanding, above-average outcome. Your resting metabolic burn is bound to have fallen, partly from losing tissue that burns calories and partly from the body adjusting to prolonged lower intake, and appetite typically rebounds after a big loss, which makes it that much harder to keep the deficit going that further loss requires.
Worth flagging since it sounds like you've paused or stopped this medication entirely and swapped to something else ('taking a break since it seems to have completely stopped working'), which honestly seems like the wrong call here, especially given how well it's actually performed with results well above typical. Sticking with only the new option means hoping it eventually catches up