I don't think there is much you can do now, just support plant's overall health to continue new growth. Sounds more like the plant was not sun hardened enough, so keep in shade to low filtered light. Hope not one of your new purchases you made yesterday at nursery? 😯 @Allira . I guess I would give light misting of seasol throughout next couple of weeks til new flush of foliage.
I brought some seasol misting spray yesterday but thankfully no this isn't one of my new ones (phew) it still has some new leaves growing so I guess that's a really good sign... But I've surely realised that gardening isn't as easy as it looks. @leisel. Thanks @jolene I'll check the link out right now :-)