I have been doing different things for the last 6 to 7 months (stopping use of any lip balm with beeswax, castor oil, and coconut oil has been a HUGE help) and my lips right now are in a much better state than when I started. So I'm hoping GIAB will work. If not, I have my special lip balms coming in, so that'll be my next step if the GIAB doesn't help. The lip balms should help anyway actually, even after my lips are healed, to keep them moisturised.
I'll keep it on as long as possible. I have a long break this entire month so I'll hopefully be able to just let the layer of GIAB do its work.