>>8286032>>8286039This. You need to expose yourself to the same concepts in different contexts over an extended period of time. You're not going to get anything embedded in your long term memory by just having one long memorization session. Your brain doesn't work like that.
Basically, don't force it. Don't do anything that feels unnatural. Flashcards, for instance, are usually a bad way of learning things, unless you really have absolutely no basis to build a particular concept upon.