All states have a program called SHIP that can help people through Medicare insurance for no cost.
You can Google SHIP for your state. They can help you find an insurance policy you can afford that has the benefits that you need the most.
They are not insurance agents and do not make a commission so they will not steer you to a program where they get paid well. They are all trained volunteers.
You won't be able to view or change insurance policies unti October, but if you will be 65 before then..give them a call.