Thinking in one language and dreaming in another isn’t confusion. It’s a bigger house to live in.

Two languages do not compete for the same room; they add rooms. One may hold your schoolwork and another your grandmother’s kitchen, and your mind reaches for whichever fits what it is doing, including while you sleep. Moving between them is capacity, not a muddle.

Stop treating the mixing as evidence that neither one is properly yours. Keep both in use on purpose: read something in the one you use less, call the relative you only ever speak to in that language. The one you neglect is the one that quietly shrinks.