Any advice

So I am in a “ldr” relationship with my bf rn only three hours away. We see each other every two weeks. We started this about 3 months ago because I had to come back to school. I have been extra worried lately that he is losing feelings for me but not much has changed. We still talk everyday. And we also still see eachother every two weeks. Every time I bring it up he tells me I don’t need to worry and that he won’t leave me. We talk about our future together too. Any advice? Am I over thinking it?