See how many days it takes to become best friends. Nickname them the amount of days. Wait a month or 2. If the nickname is still the same as the days, they haven’t sent you any gifts or opened any.
Delete them.
It takes me maybe 2 days to nickname all my friends. I think you can only do like 20 every 1 hour period
So you can do 20 between 1:00 and 2:00 and it resets at 2:00 and you can do 20 more. So start at 1:55 and you can end up doing 40 at once once it resets at 2:00
by Whos-That-Pokeman