Information retention

Hey there! I don’t post much so I thought I’d try and join the party. I decided to learn how to code cause I’m naturally curious about it, it helps that I have a friend who is an executive for Palo Alto and told me to start learning it. I’ve been doing it going on three months, I’ve learned HTML and CSS but honestly I’m somewhat struggling with retaining the knowledge. I’m also struggling with ideas for HTML and CSS projects off platform. I’m doing the Full stack career path and am very committed to doing it, just wondering what some tricks you guys might have for making sure you retain it. I’m also learning a new highly technical job at the same time so that might be it.