Strawberries are pretty forgiving of part-sun exposure in *my* location. Where do you have your container strawberries situated? Maybe particularly where you are, it's too hot and they would benefit from afternoon or noon-day shade?
We harvested a full colander this morning from that Sweet Charley bed, supplemented with Tristar and Wild strawberries that are starting to ripen.
-- AFTER pre-processing snacking
, approximately 2 quarts of perfect, unblemished berries, plus overripe or blemished berries that filled a 1 quart freezer bag after cutting off the calyx and blemishes and individually freezing them on a parchment-lined cookie sheet. I'll keep this up until I have a good supply of frozen berries, then if I have enough in addition to what we need for smoothies, I'll make some jam to can. Usually, I end up making mixed berry jam using the later harvest of mulberries, blueberries, raspberries, and blackberries.