Freelancers: How do you manage to work with multiple clients at once ?

Hello everyone, I've just switched to freelancing, was before working at a big IT Software company, and a lot of things have changed. And I was wondering, i'm actually working on three projects at once. I'm having issues to switch from one context to another. I'm currently having Notion boards, Jira boards, Adobe XD models, Figma models, AWS accounts and i'm getting more and more lost sometimes.

Have you some kind of methodology or tools to avoid getting lost when you're dealing with multiple projects at once. It's hard so stay organized with multiple set of credentials, multiples meetings minutes. I've tried password managers and to be organized in my folders, my notes, etc... But it still feels clumsy to me.