CC-14 - Guzzle Error if querying 3+ coins

[sjason19]

Context: If we compare more than 3 coins I think the API is getting throttled and then we get a Guzzle HTTP error:
Fatal error: Uncaught GuzzleHttp\Exception\ConnectException: cURL error 28: Operation timed out after 3004 milliseconds with 0 bytes received (see http://curl.haxx.se/libcurl/c/libcurl-errors.html) in /Users/Documents/GitHub/crypto-currency-manual-trader-bot/vendor/guzzlehttp/guzzle/src/Handler/CurlFactory.php:186
Stack trace:

#0 /Users/Documents/GitHub/crypto-currency-manual-trader-bot/vendor/guzzlehttp/guzzle/src/Handler/CurlFactory.php(150): GuzzleHttp\Handler\CurlFactory::createRejection(Object(GuzzleHttp\Handler\EasyHandle), Array)
#1 /Users/Documents/GitHub/crypto-currency-manual-trader-bot/vendor/guzzlehttp/guzzle/src/Handler/CurlFactory.php(103): GuzzleHttp\Handler\CurlFactory::finishError(Object(GuzzleHttp\Handler\CurlHandler), Object(GuzzleHttp\Handler\EasyHandle), Object(GuzzleHttp\Handler\CurlFactory))
#2 /Users/Documents/GitHub/crypto-currency-manual-trader-bot/vendor/guzzlehttp/guzzle/src/Handler/CurlHandler.php(43): GuzzleHttp\Handler\CurlFactory::finish(Object(GuzzleHttp\Handler\Cur in /Users/Documents/GitHub/crypto-currency-manual-trader-bot/vendor/guzzlehttp/guzzle/src/Handler/CurlFactory.php on line 186