View and remove your associated devices in iTunes - http://support.apple.com/HT204074 - Read the part at the end where it refers to the 90 day wait. This applies to re-downloading past purchases (you can make new purchases), automatic downloads, and iCloud based services such as Family Sharing, Match, and Apple Music.
Wait the 90 days or contact Apple and see if they are willing to change the restriction for you.
iTunes [Store] Support - Use this form for assistance with account and billing, code redemption, or purchase questions - hhttps://www.apple.com/emea/support/itunes/contact.html
You may wish to consider setting up Family Sharing with yourself to avoid this in the future.
Family Sharing - Apple Support
Set up Family Sharing - Apple Support
Share App Store, iTunes Store, and Apple Books purchases with Family Sharing - Apple Support