I found that practicing problem solving regularly and following freely available content online for about 90 days makes you absolutely interview ready!
This practice led me to land an APM job at urban company. After my placement, I built something that could be helpful for you as well! I thought about productising my practice routine and built Pearmock.
50% of product management preparation is practicing problem solving through mock case interviews. At Pearmock.com, you can practice mock case interviews for free and also network with product managers from all over the globe! Best part? It's all a game! We forward the profiles players who reach the highest level to the top recruiters hiring for product management!!
Feel free to connect with me if you need any more help in entering into product management. Do not purchase any courses. Trust me, it's all about practice and repetitions of solving product problems.