I agree with your intention, I'm just not a fan of arbitrary measures like a one-day ban.

I'd rather see targeted actions, say, bans or severe restrictions on recommendation systems/algorithmic feeds. Limit how far they're allowed to reach from your personal network of follows, limit the percentage of posts that can be algorithmicly driven, controls on the balance of popular posts vs relevant posts, ban infinite scrolling feeds, limit how strongly sites may neuter their search systems, maybe require warnings after certain levels of continuous usage.

If the goal is to directly and forcibly limit usage, a "credit" system would be preferable, you have some weekly time allocation for large-scale social media usage (forums were technically social media, but were far healthier than platforms like reddit, facebook, X), and you can use that allocation however you want. Your allocation can grow kr shrink based on your specific circumstances (career, history of healthy use of social media, social circumstances like living far from family, medical circumstances).