Slings
Young Bahia Scarlets usually eat more regularly because they are growing and moulting more often. Offer small prey to Lasiodora klugi in sensible portions and remove leftovers before they spoil.
If a Bahia Scarlet sling suddenly stops eating, premoult is one common explanation. Keep water available and do not keep adding live prey.
Juveniles
Juvenile Lasiodora klugi can normally take larger meals than slings, but the interval should still follow body condition rather than a fixed weekly rule.
If the abdomen of a Bahia Scarlet already looks very full, wait before feeding again. More food is not automatically better husbandry.
Adults
Adult Lasiodora klugi can go much longer between meals than fast-growing slings. Offer suitable prey, then let appetite and abdomen condition guide the next feed.
A large adult Bahia Scarlet does not need to eat simply because seven days have passed. A healthy tarantula can tolerate gaps that would be unusual for a mammal.
Premoult and fasting
When Lasiodora klugi appears to be in premoult, remove live feeders and stop offering more until after the moult and hardening period.
Food refusal in Bahia Scarlets can also follow a rehouse or occur with mature males. Check the whole context before changing prey or feeding more often.
Simple records
Record feeds, refusals and moult dates for Lasiodora klugi if you keep several spiders. A short note is enough to show whether a long fast is unusual for that individual.
Those dates are more useful for a Bahia Scarlet than forcing every spider onto the same feeding calendar.