Suggestions for gap between temporary crown and gum after extractions? (photo)

Last month I replaced a crown that I got when I was 16 (now 28) as in the last year I developed 2 fistulas above my right incisors. I had multiple canal treatments and both teeth were extracted. A week later, I had a temporary crown fitted (final crown to be fitted 6-12 months later). By then the gum above the incisor had already receded a bit. Now, 2 weeks later the gap is even wider despite starting to use Gengigel. It really affects my speech & self confidence. Any suggestions are appreciated