It is always better to learn Desika stotra patam in Sandhai form (recital by the student following the Guru). There are many online platforms available.
Notes:
GSPK offers specifically Desika stotra patam in Sandhai format. Follow this link provided to join their classes. Install Telegram app and click the link given to access details.
https://t.me/dgspk
https://t.me/gspkstotras
https://t.me/sampradayamanjari
To learn stotra as per convenience click the YouTube link given below.
https://www.youtube.com/c/SampradayaManjari/playlists