Request for ideas from GMAT experts - Score not improving 530/430/550

Hi,

I started my GMAT prep on the 4th of April. Since I wanted to have a structured approach, I thought it would be a good idea to invest with a GMAT prep company. I joined the classes of Princeton Review and started with one of their diagnostic tests. I scored a 530 in the diagnostic test with no preparation ( Q 34/V 29).

I started practising from the official guide and followed the GMAT Club's error log. I started with the easy ones and gradually moved to the medium and difficult questions. Simultaneously, I invested time each day on learning concepts. I finished learning the quant concepts in three weeks. I mainly referred to GMAT club's repository for theory. Also, I referred to Aristotle prep for sentence correction. However, after three weeks, when I took the GMAT prep Exam 1, I was devastated. I scored a mere 430. ( Q30/V 20) . I was devastated. I realised that the initial score I got , in the Princeton review's test was highly inflated, and my real level was 430. I did an analysis and found that I got most medium level questions wrong due to 'careless mistakes', and I could not solve the harder ones. Also, timing was a huge constraint. I am attaching my test analysis for anyone who might be interested.

I followed a stricter regime, and completed all the questions from OG 2020. However, i still couldn't master SC and while solving from the OG, I wasn't able to correctly answer most of the difficult questions. Two weeks after the GMAT prep 1 Exam, I took another exam from Princeton Review, hoping I would atleast touch 600 this time. To my surprise, I got another blow : A 550 (V 29, Q 36 ) (which means in the actual GMAT I may have got a score of ~450).After practising atleast 16 questions from the official guide everyday, for all the sections, it was disheartening to see my score not improve much. Again, most mistakes were 'careless' mistakes, which include miscalculations, not considering all scenarios, not reading the question carefully - for quants. For RC and CR, I wasn't able to read anc comprehend within two minutes, because of which I had to skip several questions.

My approach now : I am practising ALL the quant questions from OG 2010 to 2020 , GMAT prep, GMAT review , available in the GMAT Club's question bank, topic wise. I am able to solve questions in the 'easy-medium' difficulty level, but I am getting most of them wrong because of careless mistakes. Also, I hardly get any questions right in the 700 level questions. Is this a correct approach?

My weakness in quant : Data sufficiency, inability to solve within 2 minutes. Accuracy is ~50-60% in DS and ~70% in problem solving.
Weakness in CR, SC: Inability to comprehend a CR question stem within 2 minutes, inability to comprehend tough RC passages. Accuracy in CR and RC is ~ 50%
Weakness in SC : Inability to point out the flaws in the question stem in medium-difficult level questions.

I was hoping to apply to round one this year, but it seems far fetched. I am not sure if I should change my methodology. Any opinion on this would be very helpful. I also thought about the GRE, but I am not sure if changing the test prep right now would be a correct decision? Also, I aspire to be a consultant someday, so GMAT is my best bet.

What should I do? How should I study each day?

Disclaimer : I skipped IR and AWA.

Regards,
theleopride