Ahh okay I misunderstood you, I thought that you were saying that your actual score was a 290 in which case I would **** bricks. Alright, now that that's out of the way. To get to your point, if you are currently scoring in the 180's, I don't know how realistic it is to get to your GOAL score of 230s in what I'm assuming is 3-4 weeks. Now, would you be able to pass? Absolutely, but you're doing yourself a disservice to not maximize the amount of time that is available to you.
As far as what you do with the remaining time, whether you push back your exam date or not, my advice is to hit the first aid super hard. It's completely reasonable for people to take a practice test at the beginning of their dedicated and not have the greatest score. While it may be true that you've been doing some studying here and there, your dedicated time is a completely different animal in that you're studying ONLY boards relevant material and seeing similar concepts over and over again (not to mention repetition in getting through the material); it's extremely difficult to study for boards during the school year and retain all that information when you aren't really studying it day-in and day-out.
While I do agree with you that first aid is tough to digest and can be mind-numbingly boring to read for hours on end, the fact of the matter is you need to know or at least be familiar with the material that is in there, which only comes through repetition. You haven't finished a "first-pass", so you need to get through that material. After that, identifying areas of weakness and understanding WHY you get questions wrong is important. For me, I mark down things while reading through first aid that I don't remember from the last time and put it into a powerpoint and review that at the end of the study; it can help some of the more mundane topics stick (not that I have a great memory, but I can become familiar enough with the material to make an educated assumption). If I get a question wrong in uworld or on an NBME I review the concept, if it's not in first aid and not really relevant to any section, I take notes on what I think is the main concept. If it IS in first aid and I just didn't remember the information you can bet your ass I find a way to not miss that information again. But it comes down to what works well for you and what has gotten you this far.
Hope some of this helps you out, cheers!
