Insert statistics value to a specific date

Hey there,
due to an quite old backup, I had to go back to, I lost all the statistics between January, 9th and March 25th.
To at least correct the look of my energy dashboard, I now want to insert the monthly energy consumption or the generated electricity.
I know the statistics-correction in the developer tools and it works fine for January and March, since there are values in the statistics that I can easily change to a different number.


But since there are no values in February at all, I don´t have the option to change them:

Does anyone know a way to insert a value to the sensor?
I would be very happy, because i love statistics and would hate to insert the february values somewhere in january - that would look awful :frowning: