Fill in/memory books for 2 moms

Yv

Two of my friends have started searching for a donor so they can have a child together.

Now I want to gift them a book where they can fill in their journey to pregnancy but all the memory books I can find are with ‘mom and dad’.

Does anyone have any ideas? For during and after pregnancy I found littlepicklememories but for this stage I cannot find anything😅

(Also, I’m Dutch and since we don’t have any books I am trying to find English books)