Baking sourdough in a loaf pan

Hi there!I have been baking sourdough for a while but have always tended to bake boules in a dutch oven. Recently, I have started baking sourdough in a loaf pan and am really enjoying it. I place my loaf pan inside my dutch oven with lid on, bake for 25 minutes or so, and remove the dutch oven lid and let the loaf bake for the rest of the time. Still having some oven spring challenges and think I may be under-proofing, but my main question for others who bake sourdough in loaf pans is, what do you do to avoid the bread sticking to the pan?

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Baking sourdough in a loaf pan