To reach German C1 from zero in 2.25 years, commit to at least 2-3 hours of focused study daily, combine formal classes with massive input (reading, listening), and prioritize speaking practice even if it's imperfect. This timeline is tight but achievable with consistent effort and smart resource use.

Start by taking the German 1 class you mentioned, but don't rely on it alone. Use it as a structured backbone while you accelerate on your own. In the first 6 months, focus on building a strong foundation: learn the most common 1000-2000 words using spaced repetition (like Anki or a similar app), master basic grammar (noun genders, cases, verb conjugations), and start listening to simple German podcasts or news for learners (e.g., Langsam gesprochene Nachrichten). Aim to understand 80% of everyday conversations by month 6.

From months 6-12, shift to intermediate content: read graded readers, watch German YouTube channels with subtitles, and try to write short journal entries. Use language exchange apps more strategically: instead of random chats, prepare specific topics or questions, and ask partners to correct your mistakes. If Germans are scarce, try paid tutoring platforms where you can book sessions with native speakers for as low as $10-15 per hour. Immersion is key, so change your phone and social media to German, and listen to German music or radio during commutes.

Months 12-18 should focus on bridging to advanced: read news articles (Deutsche Welle, Spiegel Online), watch movies or series without subtitles, and start speaking regularly with a tutor or tandem partner. Aim to produce 10-15 minutes of spoken German daily, even if you stumble. By month 18, you should be able to hold a conversation on familiar topics.

Months 18-27 are for polishing to C1: dive into complex texts (academic papers, novels), write essays on abstract topics, and practice formal speaking (e.g., presenting arguments). Take mock exams for Goethe-Zertifikat C1 or TestDaF to identify gaps. If you can study abroad for a semester, that's a huge boost, but make sure you actively use German outside class.

Tradeoffs: You will likely plateau around B2 and need extra effort to push to C1. Speaking with natives is hard to arrange, but paid tutoring is more reliable than free exchanges. Grammar will be a constant challenge, especially cases and word order. Don't let perfectionism slow you down; focus on communication first.

Concrete next steps: 1) Enroll in a structured online course (like Nicos Weg on Deutsche Welle, free) to supplement your class. 2) Start a daily Anki deck with 10-15 new words. 3) Find a tutor on a platform like italki or Preply for weekly sessions. 4) Set a goal to read one German news article per day by month 3. 5) Take a placement test every 3 months to track progress.

This plan is demanding but realistic. Many learners have done it with similar dedication. Stick to your routine, adjust when needed, and remember that consistency beats intensity.