Hi
Sonam02,
Glad you found this helpful! Continuing with your questions, I understand the need to continue taking mocks, it certainly does help in building an appetite to sit in the test center for 4 hours.

As for
e-GMAT vs OG's 404 pack, I think at this point it makes more sense for you to strengthen your concepts rather than solve hundreds of questions. My understanding is that if your approach or conceptual knowledge is somewhere lacking, then it makes less sense to keep solving more of similar questions in the wrong way instead of taking time to correct the approach and then solve a handful of questions to ensure you have imbibed the new correct approach. I hope that makes sense?
As for IR questions, the number of questions available in existing OG and other official questions discussed on GMAT Club is more than enough to help you in your practice.
For CR, I think your approach is similar to that of
e-GMAT's pre-thinking. Again, personally, pre-thinking was a game-changer. I rarely get CR questions wrong because I have usually already thought what the correct answer should be like. If you go ahead with
e-GMAT, I would urge you to spend a good amount of time on fully understanding the pre-thinking approach. In terms of the time you should spend on prep of each section: prioritise SC & CR, practice a couple of RCs every day and don't waste too much time on IR. It really doesn't have that much return.
In SC, I understand the nervousness, I think I used to feel the same in my initial stages. First of all, stop looking at the timer for a few days of your prep, it is not helping you and only creating added pressure. Second, it may seem like I am getting paid by
e-GMAT to promote them, but their meaning approach totally changed the way I approached SC.

All the best!