I was doing Japanese for a few months, then I stopped. Now, it's been a month since I stopped, but I feel like I retain much of the information I had. I plan to return but eventually, I will have to completely stop later for long because I'll get into university with a double major and universities here have long attendance and huge workloads, so I won't really have any time for Japanese. Here is what I want to ask.
1) Is it better that I leave learning Japanese (I was on a bit-above-intermediate level) till after university, or should I just start now and just do Japanese in summer?
2) How much time would it take for the mind to "almost completely" forget Japanese and just come back to the beginning steps? Would learning a bit now and coming back next summer get me to the starting steps again or will I be able to continue learning (with some revision to retain information)?
Thanks in advance.