Product block in Blog - change image size?

Hello,

Looking for some guidance in relation to adding a Product block to a blog post. When I add it in, the product image is massive, presumably because the image itself has a large resolution. The result looks silly (see attached screenshot).

Unfortunately I don't seem to be able to resize the Product block. Is there a way to perhaps use code to customize the dimensions of the image, thereby reducing the size of it?

Many thanks.

*Screenshot is attached below, showing the huge Product image: