the alternative URL

GET https://feeds.dev.azure.com/{organization}/{project}/_apis/packaging/Feeds/{feedId}/packages?protocolType={protocolType}&packageNameQuery={packageNameQuery}&normalizedPackageName={normalizedPackageName}&includeUrls={includeUrls}&includeAllVersions={includeAllVersions}&isListed={isListed}&getTopPackageVersions={getTopPackageVersions}&isRelease={isRelease}&includeDescription={includeDescription}&$top={$top}&$skip={$skip}&includeDeleted={includeDeleted}&isCached={isCached}&directUpstreamId={directUpstreamId}&api-version=6.0-preview.1

on documentation has top parameter. Try to invoke the URL and set this parameter please!