It is difficult to say for sure what the status update in the tracker means, but it is possible that it means that the officer responsible for your file has opened it. Another possibility is that the tracker is simply updating to reflect the fact that your file is still in progress.
Unfortunately, processing times for Sydney are quite long, and it is not uncommon for applications to take longer than the advertised processing time. However, it is concerning that you have not received any updates since January
.
If you are concerned about the delay, you may want to contact IRCC again to inquire about the status of your application. You can do this by phone or through the IRCC web form.