We'd love to help you complete your tax return, but need more information. Can you please clarify your question?
Are you are asking why your refund changed while you were still working on your return, or are your asking why it is less than last year?
We can't see your tax information, so more detail is needed to answer a question like that.
If you are talking about the refund changing while you were working on your return, the your refund isn't calculated correctly until you enter everything, answer all of the questions and pass through the review process.