Though Aakash modules are based entirely on NCERT, there is about 30–40% extra information which is not necessary for NEET. And the questions in the module are somewhat easy.

You can't score 550+ only by cramming everything written in these modules. You need to learn everything in NCERT, especially for Bio, by heart. Your concepts of physics and chemistry should be clear. Plus you need to practice as many questions as possible and you must solve previous year papers.

The more questions you'll practice the more you'll understand the concepts.

For questions I would suggest Target Pmt or Allen's question banks. These have really good questions of all varieties.