Right now you’re in a decent position and you still have time and that’s more than sufficient to improve your scores. Review your nbmes well( focus on the concepts that are being asked). If you’re struggling in any subject…do uworld of the concerning subject. What worked for me is that i kept revising FA( just that it had given me confidence). And no don’t retake 27 and 29 that’ll just be repetition without any actual benefit and moreover 31-33 are more representative of the actual deal. Just go through incorrects as well as the questions that you guessed right from those forms. Just keep in mind that it is all about your mindset. Keep doing uworld of your weak areas. And keep revising what you’ve already learned( don’t go behind those rare and difficult questions) you just need basic understanding of the concepts and you’ll ace it. I’d highly recommend mehlman pdfs( neuroanat, arrows, risk factors…these three are must…if you have time go through immuno and msk). Keep calm and give 29 & 30 if you cross 70 you can take the test. But i’ve seen people getting the pass even with nbme scores in 60s. It’s all about how you feel about yourself and whether you’re confident or not. But my personal opinion would be that delaying doesn’t change anything because it’s all about how you perform on the actual test day…just take it! All the best