I would like that, too. I feel like there are just too many projectiles from the get go and before I could get the first butterflies I'm at one heart. On top of that, it feels like the tongues hitbox is too small and I keep missing the butterflies :(
As a designer, I'd like to recommend you to think about who your target audience is, before you tweak the game. If you do intend to keep it difficult, because it caters to the people you have in mind, then I have to respect that. It's mostly the art style that drew me in.