Thanks for reaching out about this here in the Community.
It'd be great for you to take a look at this Spotify Answer and follow the suggestions featured in it to manage your Liked Songs more efficiently. The steps under Spot and remove duplicates should be particularly helpful in this case 🙂
Hope you'll find this useful. Let us know if there's anything else we can help with!
Help others find this answer and click "Accept as Solution".
If you appreciate an answer, maybe give it a Like.