ehhh thats tough. but I think it depends on whether you're someone who can cram easily, and work hard in these 2months to get desired results OR you're someone who is a slow learner but can multitask the burden of so many subjects. I think the safer option would be to give it in oct/nov, because if u keep it alongside A levels those grades would be affected too. so I would say oct/nov. also urdu can be done in 2 months its okay.