I have been learning Spanish for a few months, ( my known words are higher than here on Lingq )
but because I will be moving to Germany in the next few months Spanish is not that important to learn now as German is so I will be starting to learn German from Tomorrow.
But I would still like to keep improving my Spanish.
It doesn’t seem like you have time… I would try to recognize the urgency of learning German and reconsider the Spanish question in 6-12 months! I wouldn’t worry about forgetting Spanish, if that’s the concern… In my experience everything you forget can be relearned pretty quickly once you’re studying it again
And yet I would read and listen to some podcasts also in Spanish from time to time to maintain this language.
It needs not so much time - 80% for your new language and 20% of time for maintaining your first language.
And it’s even useful to change your language during a day for a while.
To be occupied the whole day with the same language could be a bit boring - at least for me.
And good luck with German!
Viel Erfolg mit der deutschen Sprache!
Even maintaining a language you slowly improve your comprehension of the language. You just have to understand that the results won’t be as fast as if you were to study Spanish full time. I can agree with what Evgueny has said.
Maybe pick an activity a day that you will do in Spanish…read the news, or watch a show. I like south american telenovelas because they are full of colour and colloquial expressions. The plot is simple and follows the canonical "princess in distress, hero, witch etc. After a couple of shows you know the characters and their voices so you can just listen to the show while doing something else, making lunch for example.