Last week, the SOA posted additional guidelines for the July exams. If you are planning to take your exam in July, it’s very important to review everything in these guidelines as well as any future guidelines the SOA posts.
One very noteworthy requirement is that all candidates will be required to bring and wear a face mask/covering during the exam. From this moment forward, I would strongly recommend working all practice problems, practice exams, etc. wearing a mask to get accustomed to it. The current guidelines make it sound like any kind of medical or non-medical face covering will be allowed. Therefore I would try to maximize comfort as much as you can within your own personal risk tolerance.