Too little

The deficiency zone below the workable range. You name the observable sign that says you have genuinely dropped too low, so the lower edge marks real harm starting rather than an arbitrary number you happened to miss this week.

The deficiency zone below the workable range. You name the observable sign that says you have genuinely dropped too low, so the lower edge marks real harm starting rather than an arbitrary number you happened to miss this week.

Example

For the couple's check-ins, too little is fewer than two substantive ones a week, and the observable sign is drift: you learn about your partner's hard day from someone else, and logistics crowd out anything personal.