I came to this exact conclusion a long time ago, except using intermittent fasting (i.e. “stop eating so much”):
1. Use a fad diet (e.g. potato) to get down to 80 kg.
2. Weigh yourself every morning
3. If your average weight over a week ever exceeds 81 kg, spend the next week on the potato diet.
4. Repeat forever.
That said, nothing will prepare you for the reality. It’s like learning to swim in a lap pool, then getting dropped into the ocean in the middle of a storm.
Just learn as much as you can, talk to as many people as you can, and prepare yourself for the fact that you will not be prepared.
All good! Other than that, there’s nothing like a child saying “I love you too.” So, it’s all worth it once you get to it.
I wouldn't feel bad...those (phoneme, plosive, fricative, spirant, and affricate) are specialized vocabulary words from a specific domain (linguistics). I only know them because I have an interest in the topic. Other than phoneme, they describe how words are pronounced and/or formed in the mouth.
Another linguistics enthusiast checking in. To expand on this, a “plosive” is a sound made with the tongue stopping the airflow and then releasing it (think “t”, “p”, “k” sounds), while a fricative involves continuous airflow (think “s”, “f”, and so on). What that definition is saying is that an “affricative” is a sound that combines two of these made with the tongue in the same position. In English, an example is the “t-ch” sound at the beginning of the word “chat”. Other languages have different examples, like the “t-s” sound written as ц in Russian.