I thought the Queen looked very well today although it was sad to see her sitting alone. I don't think that was because of COVID, she and and a masked Charles had walked side by side while touching hands. I suspect she choose to sit alone to help her adjust to life without Prince Philip.
I agree that she seems to have lost a bit of weight, which is concerning. However, I remember that picture of her with Charles before Easter when she was walking on uneven ground without a cane or a walker. Pretty remarkable for 95.