Removing the sensor is a really quick and simple process. It's best to think that removing the sensor is a little bit like removing a bandaid - you want to be careful, but also assertive and essentially just do it. You should be able to peel the sticker off, starting from the edges. If the patch is fully attached to the sensor, you can get the sensor off in the same go. If you have left the patch cover on in the middle, you want to get the patch off first, then take the sensor off. You can help lift the edge of the sensor with your finger.
Good luck, you've got this! 🙌
If you want to initialize a new sensor before the 14 days have expired on your previous sensor, you'll be able to do this in the menu on the top right, by pressing 'Initialize a new sensor'.