The answer depends on what you're trying to learn and for what purpose, as it will dictate what learning strategies you utilize.

For example, if you're studying to retain information for educational purposes (and reproduce in an exam environment) then research has indicated that reading and rereading have the lowest utility (return on time invested) in the 10 common strategies used by students. The strategy offering the highest utility was practice testing under exam conditions.

If you are reading to learn about a topic that requires you to retain information in a sequential manner, then using learning techniques such as a memory palace can be helpful. This is a technique that allows you to picture a room you know very well and associate blocks of information with objects in that room while you are learning. It's a very common way to deal with performance anxiety which manifests as blank memory.

I'm happy to share some thoughts on potential approaches if you offer some clarity on what your desired outcome is.