Would a fat transfer minimize the appearance of indentations in the forehead and nose? (photos)

Fat would be a good option for you. For better precision and control I'd suggest strained or filtered fat: micro or nano fat transfer. This fat is easier to inject and is much easier to get a smooth result.

Considering the size, it is very likely that your indentations could be treated with soft tissue filler, which may be more predictable than fat grafts, in particular on the nose. Good luck.

Yes, fat transfer - if performed correctly - would help fill out the dents.

I hope this helps,
best of luck !