If Jan-25 is a hardstp for you then you have no other choice but to scramble a study plan to try and hit your target.
On the other hand if you have flexibility to move your test date, then work on a realistic and robus study plan to ensure you can hit your target and work to execute it flawlessly.
If I make a honest guess, a jump of this magnitude wouldnt usually be likely to be achieved within 8 weeks, though it is in no case impossible.
Please remember that you must find your concept gaps from your mock test baseline, work to strengthen all concepts in all 3 sections, practise enough OG questions, work on your
error log and take practise tests to review and refine your approach.
Such a preparation is essential to ensure you breach the 700+ target. Hope this helps.
Cheers