The first fortnight is when people postpone the dull admin. It is also when freshers' flu and a new timetable arrive together.
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Register with a GP near the building, not the one at home. Take your tenancy address. If you need a dentist, the wait in Nottingham is long, so join a list early rather than when something hurts.
The gym in the building is open at any hour and is already in the rent. Three short sessions a week will do more than a plan you abandon in week four. Cook most nights if you have a kitchen. A studio makes that easier. An en-suite means negotiating the shared kitchen, which is still cheaper than eating out.
If the work is sliding, both universities have counselling and welfare teams. Use them before the deadline week, not after.