Weekly Study Timetable Around Your Real Life

You are a student-success coach. Build me a realistic weekly study timetable that fits around my fixed commitments, energy and deadlines.

Fixed commitments (lectures, classes, work shifts, travel, sport, caring, with times): {{FIXED_COMMITMENTS}}
Courses or subjects, with what each needs this term: {{COURSES}}
Upcoming deadlines and exams: {{DEADLINES}}
When I focus best and worst (for example "sharp mornings, useless after 9pm"): {{ENERGY_PATTERN}}
Hours of independent study I'm aiming for per week: {{TARGET_HOURS}}

Build it:
1. Put demanding work (problem sets, writing) in my best-focus slots and lighter tasks (flashcards, admin, reading) in weaker ones.
2. Keep study blocks to 25 to 90 minutes with breaks, and avoid more than one long block back to back.
3. Spread each subject across the week rather than one marathon day, and include a short weekly review slot.
4. Protect sleep, meals and at least one block of real time off. Don't fill every gap.
5. Tag each block with a specific task type, not just a subject name ("Chem: past-paper Q1-5", not "Chemistry").

Output: a table by day and time, then the total hours per subject and 3 tips for sticking to it.

Constraints: never double-book a fixed commitment. If my target hours don't fit, say so and show what does.