yeaa it can get busy - I haven’t been actively studying languages in a while, just maintaining old ones and doing duolingo haha.
Time management skills (eg. planning out your day) are definitely the best way to stay on track with language learning, so maybe dedicate a certain amount of time each evening to studying your target language(s) as a break from school assignments. You can also integrate languages into your everyday routine by doing things you usually do (eg. watching shows, listening to music) in the language(s) you want to improve instead of your native one.