I’ve seen that when it comes to learning a language, consistency has more power than intensity. You can learn one verb a day, one adjective a day, one new word a day, and if you do this for 365 days, you will have learned 1,095 new words in a year. This also applies to the time allocated for studying. It doesn’t matter if it’s only 30 minutes a day. All that accumulated time will yield significant results at the end of a year.