Actually knowing and retaining code knowledge

Hi guys, in the past few months I’ve began to learn programming/development in the evenings after work. Currently I have been learning React, typescript and bit of HTML/CSS. Currently I’ve been following notjustdev who is great as well as using ai to walk me through particular code for understanding and other sites like stackoverflow. However, although I have been doing all this and have built a couple projects already and currently have some I’m working