Short answer: it depends on your community and the specific vrata you are observing during Paryushan.

• Paryushan is a time of vrata (fasting, self-discipline, purification). Many observe restrictions on eating and may avoid certain foods.
• Sprouts are a gray area in Jain practice. Some people (and some communities) permit sprouts, while others avoid them because sprouts come from germinated seeds, which some traditions treat as a form of life that has been disturbed.
• There are differences between Digambar and Shwetambar practices, and even among local communities. If you are following a particular vrata or guru, follow their guidance.

If you’d like, tell me your specific tradition (Digambar or Shwetambar) and the vrata you’re observing, and I can summarize the typical stance for that case.