Make a list of those who give you 3 votes and those who haven't given you anything lately, delete them - they might be from another fandom using you π but return votes so they continue to help you
I have 4 accounts and I'm keeping track of how many people are giving me votes on them. If they're active users, I return the votes, and if they're not, I delete them since they may have abandoned the app or be bots.