Hi @Jj061987
The law that decides on your application will be the law in place when your application is processed. If it is processed before April, it will be under the old law; if done after April, it will be under the new law.
Your daughter is also entitled to German citizenship if you are. Here you can read an explanation of this from the city of Cologne but the rules are the same throughout Germany:
https://***.stadt-koeln.de/artikel/06311/index.html
Best,
Éanna