You have some time, sounds like she's just building. I still have a hard time judging what stage my girls are at because they do all kinds of crazy things while they are building that are all good signs. I know to start expecting eggs soon once they no longer go on the cool side and basically just lay in a perfect coil on the heat and don't move, it's usually just a few weeks after that. Then when they are within a few days you can catch them in odd positions folding their body to adjust the eggs, if you see that, you better have an incubator ready lol.