Change one thing on a revocable trust

Your attorney should be able to work with you over the phone and via email. Any amendment to a will needs to be witnessed by two people who do not benefit from the will, just as the will was witnessed. So you would need to ask two friends or neighbors to be witnesses. They can watch from six feet or more away as you sign. Then you can go back into your house as each of them comes to, for example, your porch individually and signs in the witness space.