I’d give it another smell now, if it is still smelly, splash it again. I’ve never seen H2S get better on its own, it can only get worse. When I splash racked mine I was dumping carboys completely vertical into a 44 gallon brute, 3 or 4 times. Usually you want to have a gentle hand with wine, but there are also times you need a sledge hammer. In my experience, ridding yourself of a mild/mid case of H2S, splashing is the way to go. The next cure would be to trial a finite amount of copper solution (or products, whose active ingredient is copper, like redulees), but adding stuff like that to wine is always the final attempt to save a wine, that I would otherwise throw out.