I feel you on this. I'm usually way too honest but I'm working for a company I hate and these meetings are more of a liability for me than anything else. I'm also quiet quitting as kind of a moral imperative to take as much from this truly evil company as possible while I prep for the next gig.
Until you can find yourself somewhere you want to be you just have to prep a little for those meetings with some canned responses. At least 1 thing that is going ok, 1 very small thing that you feel could be improved, and then just say that's all you have for this meeting. In my limited experience, managers are more than happy to give your time back. One other trick to burn time in the meeting is to change the topic to weekend plans, asking your manager first what they're doing and then having anything, even if it is boring, to respond with about your plans.
Best of luck 🤞
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