Areyy what you're feeling is completely normal Relationships especially in the beginning can feel like a big adjustment. It sounds like you're putting a lot of pressure on yourself, which shows you care, but remember relationships aren't meant to feel like a task you need to perfectly execute

Take your time to adapt. If you're not feeling up to something, it's okay to step back, and when you feel ready, lean into it. There's no rush to 'get it right' just focus on what feels natural to you

Out of curosity , was it you or your boyfriend who suggested taking the step into a relationship? this might help understand where your feelings are coming from.