Hi and welcome to JA. Ray here to help you today.
You may want to file with EEOC here claiming age, sex , or race discrimination.The employer may be using this as a means to seek to terminate you based on your age.Often this is a smokescreen they try to create a reason here when it is really clearly age related.This would also give you retaliation claims if they try to terminate you file a second claim.
If you believe that you have been discriminated against at work because of your race, color, religion, sex (including pregnancy), national origin, age (40 or older), disability or genetic information, you can file a Charge of Discrimination. All of the laws enforced by EEOC, except for the Equal Pay Act, require you to file a Charge of Discrimination with us before you can file a job discrimination lawsuit against your employer.
This keeps you from being terminated as an at will employee if discrimination was involved.
The law forbids discrimination when it comes to any aspect of employment, including hiring, firing, pay, job assignments, promotions, layoff, training, fringe benefits, and any other term or condition of employment.
Harassment can include, for example, offensive remarks about a person's age. Although the law doesn't prohibit simple teasing, offhand comments, or isolated incidents that aren't very serious, harassment is illegal when it is so frequent or severe that it creates a hostile or offensive work environment or when it results in an adverse employment decision (such as the victim being fired or demoted).
I would go on and file this before your meeting.It allows you to then claim retaliation here if they terminate you , you file a second EEOC.You may want to consider your own lawyer here.The employer may also have failed to reasonably accommodate your medical condition and you can include this in your complaint as well.
I am so sorry they have treated you this way and for all you have been through.I wish you the best here.