congratz on the 15 days of no cigs. it does get easier but with your cravings i think youve taken the wrong path.
firstly what kit are you using, ie mod, tank, coil, nic strength.
hig vg juice is great for clouds but high vg usually has very low nicotine so is no good to ween you off the cravings.
high vg is for direct to lung or dripping so much higher wattage and mahoosive clouds.
50vg/50vg is for moth to lung kits at much lower wattage with average 10-14watts which then you can have much higher nicotine like 12-18mg. i started on 18mg after a 37 year bad habit and stopped overnight with no cravings. went down to 12mg within 3 weeks and within a month discovered the first ever cloud tank with super high wattage of 20watts which was the kanger subtank mini and instanly dropped to 3mg and stuck there ever since.
Welcome, day 15 I remember them cravings, youve done the hardest part.
It`s easy to slip though - some people go straight to sub ohm vaping but if you need the nic you need Mtl set up & higher your nic level.