On Developing a Second Brain in Foreign Language Learning

As Steve Kaufmann, a Canadian polyglot who fell in love with language learning early on during his ongoing 77-year existence on this planet, has reiterated that achieving a meaningful level of understanding in a foreign language requires a dedicated amount of listening and...hopefully...reading time whereby one's neural pathways are redrawn to develop what is essentially a "second brain" in that language. I am probably studying too many languages at the same time with Chinese, Russian and Spanish currently on my plate, but that's a lot fewer than the number I had been pursuing. Progress is difficult to measure or report since it isn't easily quantified: sure, I can count the words I've learned, but actually comprehending the spoken language in real time is a completely different matter. I would be better served in this regard were I to habituate myself to deeper, concentrated listening and reading with available translation...Kaufmann's LingQ website can be a help with this, and until recent difficult events arose demanding my attention, had been using ChatGPT to generate practice sentences in my target languages on different levels of proficiency.  Yet I'm a little too tentative with computer apps and maneuvering through the digital quagmire that others seem to effortlessly glide through. But if I can intentionally learn to better use productive apps and functions, then this can be a great help.  In any event, I do enjoy studying these three languages, and I guess that's the most important thing...