Feedback and Advice needed :) Target score 730+

Hi all,

I am posting this to seek your opinion
That would be much appreciated if anyone could give me some tips, advice, recommendations on useful materials and feedback on my study plan for the next 2.5 months.

Here are some data.

My Official GMAT Score
April 2021 (Online) - 600 (Q44 V29)
September 2021 - 630 (Q47 V30)
December 2021 - 640 (Q43 V35)
Verbal
CR 65th (Analysis 50%, Construction 75%)
RC 68th (Identify Inferred Idea 66%, Identify Stated Idea 75%)
SC 79th (Grammar 50%, Communication 100%)
Quant
PS 35th
DS 52nd
Arithmetic 36th
Algebra/Geometry 58th

My Official GMAT Mock Score
August 2021 - 610 (Q45 V29)
September 2021 - 620 (Q44 V31)
September 2021 - 510 (Q45 V11)
October 2021 - 640 (Q49 V28)
November 2021 - 620 (Q44 V31)
December 2021 - 670 (Q48 V34)

Materials I used
2020 August ～ Manhattan: Foundations of Verbal + Quant, All Verbal + Quant and OG
2020 November～ eGMAT Verbal and Quant, Powerscore CR, Manhatten Mock and OG
2021 April ～Math Revolution, Powerscore RC, Varitas Mock and OG

I usually study Quant for 2 hours and Verbal for 2 hours in a day from Mondays to Saturdays, and have kept this routine for about 7 months now.

My Goal
To get 730+ on my next exam at the end of February 2022
Aiming to get Q51 and V45, which is 780, while preparing for the exam although I will still take any score between 730 and 780.
Do you think it's achievable for me to get 730?

My Study Plan
I will have 4 to 6 hours a day to study for the next 2.5 months.

Quant:
I have studied most of basic concepts, but I still find about 50% of 600-700 level OG questions challenging and 80% of 700 level quite hard.
My Quant score fluctuates a lot between 43 and 49) I am not entirely sure how I should improve from here, in order to get Q50, but I am thinking of taking Target Prep course.
When I face a difficult 700 questions, I just do not have any idea how to approach them. I would like to overcome this challenge.

Verbal:
Compared to a year ago, I have improved a bit but I am still not good enough to achieve V40+. I have studied basic approaches to most of questions types.
I am thinking of working on LSAT RC and CR type questions in order to improve my fundamental reasoning skills, probably using LSAT PowerScore RC and CR.
And, I am looking for a study buddy, especially to work on the Verbal section together. Please let me know if anyone is interested

Thanks for your time reading
Would be great if you could give me some feedback!

Thank you in advance.