The first part of the IELTS Speaking Test lasts around 4 to 5 minutes. The examiner asks about 10 questions related to you, your daily life and your interests. Common topics are hobbies, family, friends, food, music etc.
Part 1 questions are supposed to be easy, and the examiner must get through all of the questions in 5 minutes or less. That's only about 30 seconds per question. If you try to give long answers, the examiner will interrupt you. My advice is to keep Part 1 answers very simple:
Do you prefer home-cooked food or food from restaurants?
I prefer home-cooked food because I think it's healthier and you know exactly what you're eating. I also enjoy cooking for family and friends.
You don't need to say any more than this. Just answer the question with a full sentence, give a reason, and maybe add one extra piece of information. Then stop speaking. Stop with confidence and look at the examiner, ready for the next question.