welcome to the forum

wait for the more experienced owners to help, in the meantime i can answer some things for you.
im afraid only half of the diet idea is right.
- berries are treats only, and not an essential part of the diet, should not be overfed (even if they look at you with those cute eyes...)
- mealworms are not good staple feeders due to their nutritional balance, same goes for crickets and superworms. if wanting to feed insects, roaches are great and simple. some here feed hornworms, silkworms too occassionally and theyre also good.
- you need to add veggies/salads to hid diet, usually. some only feed dogfood with veggies ocassionally and have healthy skinks with no problems at all, but it might be a good idea to try to introduce him to veggies at the very least.
chop up the veggies and the dog food in a food processor or by hand, tiny pieces. then feed. if your skink doesnt eat, wait another few days and give again. appetite building is seemingly the only thing that works when introducing new food to these "picky eaters" xD
in order for our advice to be proper we will need some more information from you, the skinks age and/or size. an adult skink can wait several weeks just to get their hands on exactly the food they like (but not normally the food thats "good" in large amounts....), whereas a very tiny baby should be eating heartily.
a younger skink (below a year) usually recieves more protein rich food(if feeding dogffod and veggies, the ratio of dog food should be higher)
an older skink (around a year or older) usually recieves a more balanced, opportunistic diet (either the only dogfood/veggie mix or dogfood with occasional veggies).
about feeding schedules, an adult skink eats three to one time a week, depending on the portion size, the skinks general appetite and behaviour (an exceptionally lazy skink wont eat as much, whereas a very active one might. some skinks are gluttons and some eat a lot only when they feel like it).
dont forget to add calcium with d3
btw - we love photos
