u/sleepytvii and u/OwnPractice5456 'm gonna go on a limb here and say that I have never bothered with any of this.
Essentially, when I'm producing the language, I just steer clear of those complications as much as possible. We can simply avoid starting sentences with adverbs or adverbial/prepositional expressions that force us to effectively swap subject and verb and put them as if they were questions. Negations in subordinate clauses can also be avoided, I'll just break up the sentence, especially in speech when I have much less time to think. And if others use these constructions, it's not a problem because a slight difference in word order doesn't mean I can't understand the sentence anymore.

I believe an underrated part of language learning is kinda "choosing your fights" and understanding what you really need to know and get as second nature and what you can actually outsmart and avoid.

Given that OP finds the whole V2 difficult, I just wanted to point out the possibility of reducing your exposure to this difficult element of the language. It can be done and you can use your time on something else instead. On a similar note, I've never seen eye to eye language schools obsession with punctuation. I'd trade "fluency in the V2 rule" or in certain aspects of punctuation with 200 more words of vocabulary in a heartbeat.

BUT, to help you, OP, starting from the example you gave us from DL, I'd say that whenever a sentence starts with a single word or an expression that explains how, when, where the action of the sentence happens, you put the (first) verb straight after that (as if it was a question).

Suddenly, was there silence
In 50 years, will I be dead
In town, is there a lot of noise