The time-wise imbalance of deaths is a very basic fact about the ongoing war, I didn't realize you were ignorant of it and needed a verification. The Hamas-provided statistics are timestamped, you can look e.g. at
https://data.techforpalestine.org/docs/casualties-daily/, download the CSV file, look in the cumulative deaths column, see that it's just over 60k for the entire period, and note that 30k occurs around 2024-03-01. So I was slightly off and it's a little less than 5 months (oct 07 to mar 01) out of a little less than 23 months (oct 07 to 2025-08-31) that account for 50% of the deaths.
There isn't any report that actually counts Gaza's population, the UN provided an "estimate" with no methodology, births are not mentioned, and it's built on figures including number of people who exited Gaza (irrelevant to the claimed decrease due to violent deaths). That's not serious.
There's no coherent notion of genocide that fails to reduce the population significantly. Yes, you can argue (and people have) that the legal definition, by using the "part of" wording, can conceivably apply to virtually any number of deaths, but again, that's not serious.