As others noted. Follow more is the best solution, but I would also consider if you're getting content from non-followed accounts on twitter. Like the "for you" feed. Even if you use the "followed" twitter feed, consider how much of your feed is retweets of accounts you don't directly follow. That's just a network effect that nostr can't compete with for awhile. In the meantime, be the network effect you want to see in the world.