Enquiry on exam sitting

Hello sir.. I am planning to do both SBR and AAA in March 2021 sitting.Is it enough for studying P Level as there are 17 weeks from now (cleared F7 in Sept setting and F8 last year as I took papers not in the order due to my basic paper exemptions) or is it better to push 1 subject to June 2021 and do only 1 P level paper at a time.. I am also doing F5 in December sitting..Besides , I am getting only limited time every day to a maximum of 5 hours a day... Even though it depends on an individual's skill to learn, I seek your invaluable advise regarding this, so that I can make a right decision on doing the exam. I earnestly wish to pass the exam in first chance.. Please advise...