Hello everyone. I started a master's in mathematics this semester and I'm worried I'm not excited about as much as I thought I would be. I double majored in physics and mathematics for my BS and now I think I miss the physics. I wanted to do a MS in mathematics and then go back to physics for a PhD. I've heard that some people have done that but now I'm worried that I might now be able to. Does anyone one know if it is easy to shift back to physics? Also I'm thinking that I might want to shift back to physics next semester if possible, does anyone think this is a good idea? Thank you.