Ok,
firstly before we continue, We need to know: -
1. What is the ratio of the mix, for example is the juice 50/50 PG/VG or 70/30 PG/VG
2. How much liquid in 24 Mg strength are we talking about
3. If this is a premixed liquid, you do realise you will be diluting the flavouring and making it at least 50% weaker.