Most appointment calendars are built by the office, not by you. The first open slot goes to whoever answered the phone, and then the rest of your week gets arranged around it. Before you accept a date, measure what your week can hold.
Local option: New Plan Care gives families in the St. Louis area in-home help so a parent can stay home: companionship, help with bathing and dressing, meals, and overnight care. Call (314) 405-0887.
Count the real length of one visit
The visit is not the appointment. Add the drive, parking, the walk from the car, check-in, the waiting room, the exam, checkout, any stop at the pharmacy counter, and the drive home. Write the total down. It is often several hours, not the time printed on the confirmation. If your parent needs help getting in and out of the car, across the lot, or up a step, add the time that help takes too.
Count the hands, not only the hours
Who goes into the room? Who drives? Who waits in the lobby? Some visits need you inside because you are the one who hears the instructions and can repeat them later. Other trips a hired companion can cover, for the ride or the waiting-room stretch. Write one name next to each trip. If your name is the only one on every line, the schedule is too big for one person, and that is useful information.
Check your parent's best hours
A morning slot is a poor fit for a parent who does not get moving until after lunch. Ask the office whether morning, midday, and afternoon slots exist, and whether there is a cancellation list. Put your parent's best window on the calendar first, then fit the appointment inside it.
Compare the options before you say yes
Ask whether the appointment can move to a day that keeps your parent's best window. Ask whether related visits can be booked on the same day in the same building. Ask whether a follow-up can be a phone or video check, and whether the clinician considers that appropriate for your parent's situation. Ask what the cancellation rule is and how much notice it needs. Ask whether a family member can receive results or instructions by phone if you cannot attend in person, and whether the office has a written release for that.
Leave a gap after each trip
Do not stack a visit on the same afternoon as a grocery run, a bill call, and a pharmacy pickup. A hired caregiver can pick up a prescription as an errand. The medicine itself, and any decisions about it, stay with the family, the prescriber, and the pharmacist.
Write the schedule on paper
Put each trip on one line: the date, the time, the full block including travel, who goes, who drives, what to bring, the office phone number, and the reschedule rule. A printed page on the refrigerator is harder to lose than a message thread.
If the week still does not fit, that is a fact about the plan, not a failure on your part. The Local Help for Caregivers in St. Louis page is a place to start for rides and daytime help, and Permission and a Plan covers the larger picture of what to take off the list.