At the moment, Hey Monika doesn't offer a formal "pause" option. If you know you won't be using the platform for a while, the best option is to cancel your subscription from your account settings.
You can then re-subscribe whenever you're ready to pick it up again. Don't worry — you won't lose your progress. When you return, your account history will still be there, and you can continue from where you left off.
Get started or re-subscribe at heymonika.app.