Here is something interesting I came across when searching this site. It's an article about UV and mimicking native habitats with a species guide at the bottom. Here is the section for cane toads. Perhaps I will add low level UV and increase temps a bit from low to mid 70s. Interesting they state these are occasional baskers.

How much UV-B does my reptile need? The UV-Tool, a guide to the
selection of UV lighting for reptiles and amphibians in captivity
Frances Baines1*, Joe Chattell2, James Dale3, Dan Garrick4, Iri Gill5, Matt Goetz6, Tim Skelton7 and Matt Swatman3

The listings below are biome, thermoregulatory behavior, photoperiod, microhabitat.
Cane Toad:
Tropical and Subtropical Moist Broadleaf Forests;
partial sun/ occasional basker;
13:11h summer:winter;
Basking temps: 86-95;
Temps: Summer 82-90 Day, 75-79 night
Temps: Winter 75-82 day, 72-75 night
Microhabitat: Leaf litter, Rocks crevices or burrows, Grassland or savanna, Riparian or wetland