Whilst I don't know how's the job market where you are from, 1+ year savings should be more than enough to quit without fear (if it's not then you might want to consider why). You can take a break to regain your love for coding and to think what you want to do next. If you feel restless while on the break you can take courses or do some personal projects. Once you feel more refreshed you can start looking for a job with the right mindset. Don't leave it for the last minute, though.

You can obviously look for another job right now and just swap, that would be fine, too. But consider your current state of mind, which is due to your current job being so horrible. If you interview right now you might be nervous, more focused on getting out of there than finding a job you will really enjoy and thrive in. And that might not end well.

As a disclaimer, I will say that I've been in both situations and the first went better than the second (not that the second was terrible; simply not as good as the first). What I just wrote in the paragraphs above is me looking back and rationalising both outcomes.

Whatever path you choose, good luck!