Adobe Animate and Mixamo

Hi! So I am the director, writer, etc. of an animated horror/thriller film. Our animator (who we had since Jan. of 2022 and who I found on Discord) has been MIA for the last 2 months and I think he silently quit. So, I am trying to animate the entire movie myself, create the characters, etc. Over the last month or so I have been learning some stuff in Blender, downloading royalty-free models, editing them, giving them clothes, etc. etc. I was planning on using Adobe Mixamo to get all the animations done (is that even possible for a movie? Sorry, I am new to everything animation honestly) and then to upload those animations to Adobe Animate, also upload the backgrounds/enlargements, edit the animations into there, then use the lipsyncing thing in Animate (not sure exactly what it's called) to add lipsyncing to the characters for the audio recordings with all of the lines, Sound FX, etc. First of all, is this possible and second (which I guess is intertwined with "is it possible?", when you do the lipsyncing thing in Animate, does it has to be a still model or can it be a model with animation, like uploaded from Mixamo like I was planning on? Thank you so much!