@kdambekalns and @daniellienert my current state of knowledge regarding release funding is:
we budget 4.000€ per release (this number was provided in this thread: Funded release work).
I can see from your actual hours that this budget does not cover your efforts for this major release. I see the following options:
- you agree to share the budget of 4.000€ between the two of you
- you request additional budget from the next minor release (“just” a shift in budgets)
- you request additional budget to cover more of your actual hours (if approved by the team -> possibly squeezed out this year, otherwise next year)
Up to you which way you want to take it 
(as a personal note: I have no strong emotions here. If you feel that your work would be undervalued with the 4k€ budget, I am totally fine if you ask for more compensation. imho there are no right/wrong solutions here. Both of you put in a lot of effort to make this release happen and imho it would be a shame if that left both of you unhappy.)