Fidgetiness in a sentence as a noun

Usually when I say the former the response is something like "But how can we really estimate it or plan it before we know exactly what we're doing"Writing overly detailed requirements without coding gives me the same feeling of fidgetiness you mention.

Fidgetiness definitions

noun

a feeling of agitation expressed in continual motion; "he's got the fidgets"; "waiting gave him a feeling of restlessness"

See also: fidget restlessness