It was waaaaaaay harder than I remember it from 12 or so years ago, but today I conquered the game. Excellent.
Dracula took 8 attempts (although I’d tried yesterday about 20 or 30 times), but in fact, his final “form” was much easier than his first few. I managed to force myself to only get a hit in when it was safe, concentrating on avoiding projectiles rather that smacking him in the face. This really helped. Getting my health back up to full twice during the fight helped too.
Game over then!