"Frequent checkups" means regularly going to see a doctor or specialist to make sure you are staying healthy and that any potential problems or illnesses can be caught early. Full definition
However, due to the increased risk of illnesses in senior pets, we often recommend more frequent checkups as your pet ages. (bensalemveterinaryhospital.com)
This is why frequent checkups with a mammogram is often recommended to women as this type of scan can identify ductal carcinoma in situ. (consumerhealthdigest.com)
Puppies especially should have frequent checkups as they grow. (cuteness.com)