You can get a beam bender, a bit of plastic lens to adjust the angle of the light, car headlights have similar optics to put each light in the right place
https://www.ebay.co.uk/itm/Wide-Angl...frcectupt=true
You could probably make many from a square of fresnel lens if you're that way inclined
https://www.ebay.co.uk/itm/Credit-Ca...p8O-LjDTs-n_vg