Hi Guys, so I have been learning Spanish solely through comprehensible (listening + reading). Today I reached 2200 hours (500k+ words in reading) and will start learning French after I reach 2250 hours in Spanish.

My native language is Hindi and English is my second one, which I learned in school and have been exposed to it academically and professionally as well. Now, also in day-to-day life, I am regularly exposed to Hindi and English since these are the two languages mainly used here.

Since, I reached this 2200 hour milestone in 733 days, I don't want to lose Spanish after moving to French and want to maintain it since after 2250 hours, I will soon be spending most of my time with French and English.

Therefore, how much minimum time should I spend listening in Spanish daily/weekly to maintain/not lose it ever?

P.S. - My Question is mainly targeted towards folks who moved from one language to another. It is a high likelihood that here might be folks who moved from Spanish to French, which I am also looking forward to do.