useColdSearcher temporarily as TRUE for cfindex of Solr?

I'm running a cfindex in Solr of some 35,000 documents. The process keeps getting "maxWarmingSearchers exceeded" errors and

I have found no mod of the setWarmingSearchers, cache and other things mentioned in various posts about the error. I finally found mention of useColdSearcher in solrconfig.xml normally being set false, but this could be set to true to avoid using maxWarmingSearchers. Is there a way to add that as an attribute in the cfindex attributes so useColdSearcher can be set to TRUE for a specific cfindex command but leave it as false in solrconfig.xml for general purposes?