If you’ve only had it in your tank two days it would be adjusting. If it wanted more light it would detach and relocate itself (assuming you don’t have it banded to a rock or something) I had one that was unhappy for a while and it was closed closed so you’re is already better than that. I’d give it a week and just let it do its thing. If in a week or so it’s not opening up like it looked like in the store then maybe we can revisit and start looking at other issues