Count reviews before adding new cards
A daily target of twenty new words sounds simple, but those words return tomorrow and later in the week. Your workload includes both introductions and reviews. If a short study session is already full of overdue words, adding another large batch makes it harder to keep up.
A ten-minute plan you can adjust
As a practical example, spend the first part of the session on due reviews, a few minutes meeting new words, and the remainder trying to recall them. These are planning suggestions, not an experimentally validated timing formula. On a busy day, a review-only session is a perfectly useful choice.
If you keep guessing rather than retrieving, shorten the new group. If reviews remain comfortable over several days, cautiously increase it. A single easy session is not enough evidence to double your target.
A 50-word unit is not a daily assignment
In Vocabee, units organise the course. You work through smaller groups inside a unit and can leave before finishing it. Finishing fifty introductions in one sitting is different from remembering fifty meanings after a week.
Do I need thousands of words before I can use a language?
You can use a limited vocabulary for limited situations. Reading an unfamiliar newspaper or following a film asks for much more. The useful question is what you want to understand and say next. Learn frequent words, then notice the gaps that appear when you read or listen.
Be careful with vocabulary-size claims: word forms, word families and separate meanings are different counting units. Vocabee reports learning entries. A fixed number of entries does not certify a CEFR level.