Sending one query at a time for player in SQLITE3

how do i send only one query per player ? i currently update player's blocks mined every time they break a block and it lags

PHP:

-- #    {add_blocksMined
-- #        :username string
-- #        :blocksMined int
UPDATE stats
SET blocksMined = blocksMined + :blocksMined
WHERE player = :username;
-- #    }


PHP:

public static function addBlocksMined(Player $player, int $count = 1)
{
    $plugin = MainClass::getInstance();
    $plugin->provider->executeChange("add_blocksMined", [
        "username" => $player->getName(), "blocksMined" => $count
    ]);
}


PHP:

public function onBreak(BlockBreakEvent $event)
    {
  API::addBlocksMined($player);
}

 

Before you worry about lag you should get it working; you haven't even defined $player. Do you use an IDE?