Yes, it is possible to make significant progress in learning French within three months, especially if you dedicate yourself to consistent and focused study. Some tips to help you achieve your goal:

1. Set Clear Goals: Define what level of proficiency you aim to achieve in three months. 

2. Immerse Yourself: Surround yourself with the French language as much as possible. Watch French movies, listen to French music, and try to engage in conversations with native speakers.

3. Structured Learning: Utilize language learning resources such as textbooks, French online classes, or language learning apps like Duolingo, Babbel, or Rosetta Stone. These resources provide structured lessons that can guide your progress.

4. Practice Regularly: Dedicate time every day to practice reading, writing, speaking, and listening in French. 

5. Find a Language Partner: Practice speaking with a language partner or tutor who is fluent in French. This will help you improve your conversational skills and pronunciation.

6. Use Flashcards: Create flashcards to memorize vocabulary words and common phrases.

7. Imitate Native Speakers: Pay attention to the pronunciation and intonation of native French speakers and try to imitate them as closely as possible.

8. Focus on Core Skills: Prioritize learning essential grammar rules, vocabulary, and commonly used phrases to build a solid foundation in the language.

9. Stay Motivated: Celebrate your progress along the way and remind yourself of why you wanted to learn French in the first place. Set small milestones and reward yourself when you achieve them.

Remember that becoming fluent in any language takes time and effort, so be patient with yourself and enjoy the journey of learning a new language. With dedication and consistent practice, you can definitely make significant strides in learning French within three months.