Preparation for Gate EY ( Ecology and Evolution)

Hi guys, I have started preparing for Gate Ecology and Evolution recently. I wanted to know which lectures to use. I bought the online course of Ifas, it is good in theory, I can solve the Csir Ecology questions but am not being able to solve the Gate pyqs. One of my friends suggested me to watch NPTEL Ecology course from IISC and NPTEL Evolution course from Sutirth Dey at IISER Pune. But, it's too much work to write notes from YouTube as they don't provide it like Ifas. What should I do and how to prepare, please help!