From Longman Dictionary of Contemporary Englishmuddle along/on phrasal verbCONTINUE/NOT STOPto continue doing something without having any clear plan or purpose, or without having enough help or support There’s no point in muddling on in the same old job forever. Many of the students complained that they were left to muddle along on their own. → muddle→ See Verb table
Examples from the Corpus
muddle along/on• The challenge is overcoming that nagging sense that old ideas are merely being reworked, that sense of muddling along.• Yet it is not clear if the Communist party has an alternative strategy or is just muddling along.• Rather than just muddle on as I was before it was highlighted and said well these need watching.• Students are often left to muddle along; the help they may need is not forthcoming, even in tutorials. 