Upgrading from Adobe Illustrator iPad to Illustrator Desktop

Hello! I just had a quick question, I purchased Adobe Illustrator iPad version in September 2025 and I did the yearly subscription. I wanted to upgrade to getting the desktop version which I know costs more but my iPad subscription isn't up until September 2026 and I didn't know if there was any way that I can somehow upgrade to the desktop version and pay the difference without having to pay twice and sort of losing what I already paid for the iPad version. I was having trouble finding some info on it so if anyone has any that would be awesome! Thank you!