There is a feature to add npubs and you can 1 click add your follow list. So you wouldn’t have to add / subtract 1 by 1. Also there is API that might allow you periodically update your relay to your follow list. nostr:npub10npj3gydmv40m70ehemmal6vsdyfl7tewgvz043g54p0x23y0s8qzztl5h  might have some ideas