You can use lanolin! It's edible but also an amazing barrier ointment normally used for breastfeeding but can be used for sooo many things like this and nappy rash. Also scratch mits or the built in ones in onesies x
My little girl is the exact same then I feel guilty for covering her hands.. but her sleeves then end up SOAKED from her sucking them ^ maybe lanolin I might try that xx
Could you put scratch mitts on or even the bits that fold over hands on the onesies just to give the skin a break and a chance to heal for a week or so?! My LG has hands in mouth 24/7 and seems to now have a preference for sucking her thumb haha 🫶🏻