Regarding Ivan, your best bet is to just let it happen. It is honestly my belief that animals sense moods and feelings from their humans, and respond accordingly -- so if you anticipate that your cat will hate getting a bath, then it will hate getting a bath, for example, but if you just leave it to its own devices, it will bath itself quite naturally (in water, even). So send "vibes" of acceptance and love to both of them. That's pretty much all you can do.
He looks like a domokun in those last two pics.
Oh, and: you'll be fine!