( saying ) it is better to deal with sth immediately because if you wait it may become worse or more difficult and cause extra work
A STITCH IN TIME (SAVES NINE)
Meaning of A STITCH IN TIME (SAVES NINE) in English
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005