Every step in your roadmap comes with an estimated number of hours. Those numbers aren’t pulled from thin air: they’re based on typical time to finish that kind of work (reading, exercises, small projects) for someone who’s new to the topic.
We’re not trying to be precise to the minute. The goal is to give you a sense of scope so you can plan your week and see how today fits into the bigger picture.
If you finish faster or need more time, that’s normal. Use the estimate as a guide, and adjust your pace based on how you learn. Progress is what matters, not hitting a number.