Anyone have this convertible seat for their LO And are using it? I’m having such a hard time trying to get it to tilt…

Anyone have this convertible seat for their LO And are using it? I’m having such a hard time trying to get it to tilt back so that my LO Can sleep comfortably without her neck falling forward and nothing’s helping 😩 it makes me super stressed out! I even try to put a blanket under the seat and it doesn’t seem to do anything. Anyone have other suggestions?