I'd say rather than practicing interview questions, work on a side project that really stretches your technical ability. And a hard project, something that you don't even know where to start, not just "I'm going to rewrite this todo app in vue.js". I think that gives your brain more of a workout than droning through interview questions day after day. Even though you could say "you don't run marathons to practice for a sprint", just in my experience it works better. The interview practice websites are too easy to get distracted from, or look up the answer, or whatever, and your brain really doesn't get the workout that a solid long-term low level project gives it.
Plus, at the end, at least you have a project you've done.
Plus, at the end, at least you have a project you've done.