Deciding whether to start a third language or continue studying L2 can be completely opinion-based. Some people think English is enough but others don't. But there are always people (For example myself) who always dream of being getting fluent in a third language but don't know whether it's the time to start or not.
I've seen this question and I know there may be disadvantages and also advantages and you shouldn't quit L2 let your it get passive in your mind while learning L3.
But my question is
- Are there any criteria to ensure me that I am proficient enough in English to start another language? (Suppose that English is the most important)
- What factors should I consider in my decision when choosing the right time to start?
In fact I'm searching for any statistical evidence, standard , etc to help me decide easier for an opinion-based problem
oneorsomeonein the final questions. If I write a summary of myself, that is because I want to give you an example of a real situation. I am asking what level of proficiency is adequate for someone (anyone with any L2) is adequate to start another language? And is there any particular criteria to ensure that you know enough to start another language? of course if I start German or French, I won't quit studying English to let it get passive in my mind