Wow never seen or heard one so cute and she’s doing her best to keep him calm he’s just a little frightened bc he’s so small and people are so big and just doesn’t understand what’s happening.
The best baths I've seen are by professional sanctuaries where they place in water give something to hold onto pour water over. Touch with soap by whole hand massaging. Babies are plunged underwater whilst their mothers swim in the wild.
What a great idea to bathe him on this plastic comforter so he's not afraid and it's not foreign to him. He doesn't know about the wild so he's accustomed to this way of living. Congrats to you on such a good job. You have a kind heart.
When you bathe him he gives out those sweet baby sounds, not the stressed sounds of being mis handled like others. I am sure you are comforting to him in his baby times.