Quiet Quitting

I am struggling hard. I have decided to switch career fields and have no motivation at work anymore. I can't quit for a few months and don't want to leave a bad taste in my employers mouths. They are a good employer but because I have decided this wasn't for me I feel no motivation to do anything. My task paralysis is at an all time high. What can I do to improve this and be a half decent employee? This career change isn't 100% set in stone so I might not leave as soon as I want. I just need to last a few more months at least though. Has anyone else experienced this?