For this reason alone, I'd say there's no major benefit to deloading right now. Build that consistency and momentum for another month or three before considering a serious deload.
You should probably do something about those "bad knees" though.
This article has a few different coaches giving their thoughts on deloading:
Basically, a deload is an "easier" week where you dial things back a little bit. Instead of turning the dial to 11 every workout, you go to an 8 or 9, maybe less if you've been pushing extremely hard or have some more significant issues that need addressing (injuries on the horizon, etc.).
You generally keep the same training routine but you'd reduce the volume (less sets per exercise), reduce the weight (a lighter %RM), or reduce the intensity (not pushing each set as close to failure) depending on exactly how you've been training prior to the deload. If you wanted/needed to get more "fancy" or to address more particular issues, you might do an entirely different routine for the week - all bodyweight exercises or all dumbbell work, for example. Or it could just be a mental rest where you ditch the gym but play some basketball or something, so you're still active, just not lifting.