I have a potentially useless decode, but anyways, here it goes:

Normally, when Q writes "Nothing can stop what is coming", the nest sentence is "Nothing." with a .

However, not all sentences after are "Nothing" and some end with a !

The sequence so far is

… .!.!.!. ..

This is the Q drops corresponding to each

2494 .

2513 .

2533 .

3312 ("Nothing" not in drop)

3320 .

3426 !

3498 .

3590 !

3784 .

3891 !

3897 .

4052 ("Nothing" not in drop)

4616 .

4648 .

Therefore, I suspect that the next drop containing "Nothing can stop what is coming" will contain a "Nothing" with a dot at the end. Maybe someone can see anything else here, I tried morse code, but it didn't work.