Yes, it is possible daily 2 hours study for F6 and 2 hours study for F7. Study text Kaplan and revision kit Kaplan.
I personally would not find it possible at all. Maybe if you devote 35 hrs/pw you could succeed, again depends on experience in your current/past role and ability to concentrate and digest material.
F6 is highly technical topic and requires a lot of practice and questions tend to test your ability to demonstrate workings accurately in a timely fashion. You would at least need to attempt 3 past exam papers (3.15 hrs each) and then analyse your responses- this alone will take you about a week (as you will need to go back to your study materials to fill in the gaps)
F7 is not as technical, but can be tricky and brings a lot of knowledge from F3 syllabus, which tends to fade away as you go along with your papers (or even have an exemption).
We all have a tendency to answer the question in a fashion that involves us putting down what we know about the subject rather than what is being asked, that is a tricky part as well to tailor your answers to what examiner asks you in F7.
Nevertheless, you may need to consider over a quality of your understanding of the material rather than the speed, as further papers will heavily rely on what you have learnt.
Hope this helps and best of luck with your exams!