Can I go up a whole band in 4 weeks?

Sometimes, especially if your first score was low because you didn't know the format. Usually expect about half a band from four weeks of focused practice.

Should I do a full test every day?

No. Full tests show where you are, but improvement comes from reviewing mistakes. One or two full tests plus focused practice works better.

IELTS guides

IELTS study plan: how to prepare in 4 weeks

In four weeks you can learn the test format, fix your most common mistakes and build exam stamina, which is often worth half a band. Start with a full mock test, spend each week on your weakest areas, and finish with another full test under exam conditions.

Before you start: take a full test

Take a full mock test to find your starting band in each skill. Write down your scores and the question types you got wrong. BandLevel's first full test is free.

Week 1: format and Listening

Learn the format of every part (Listening, Reading, Writing, Speaking).
Do one Listening test every two days and review every wrong answer with the transcript.

Week 2: Reading

One timed Reading test every two days, following a timing plan.
Keep a list of question types you get wrong and practise those.

Week 3: Writing

Write one Task 1 and one Task 2 answer every two days, timed.
Get feedback on each, then rewrite one paragraph using the corrections. Check length with the word counter.

Week 4: Speaking and a final full test

Answer Part 1 questions out loud every day and practise Part 2 with the cue card timer.
Record yourself once a week and listen for long pauses and repeated words.
In the last week, take a second full mock test in one sitting and compare it with your first.

Every day (20 minutes)

Read one English article and note five useful phrases.
Listen to a podcast or news report without subtitles.
Speak English out loud for a few minutes, even to yourself.