Tips for Nina df3,2,b into db2 HELP!

Hi!

So I've decided to try Nina out, but I'm having trouble learning this little combo extender. I just wanted to ask if any Nina players have some tips for this one because I inconsistently pull this off. I just find that I wanna use this more often.

Shoutout to Ryzing Sol for this bnb combo!

https://preview.redd.it/0jgmm86cddze1.png?width=1174&format=png&auto=webp&s=aeb21c7ebb7144ef768b3d1ce532c4b6acefe61a