Yup, 32 mg is very high. I agree with Thrasher. Add some VG or PG to the juice or a bit of both if you want to keep the ratio the same. The good thing is that you want to reduce both nic and flavor. If you add an amount half the volume of your juice it will be 21 mg which is still a significant amount of nic. So for example, start with 5 ml of juice and add 2.5 ml. If you want a different end result, it's just ratios.
You didn't say what proportion of vg to pg your juice is. Juice is typically more pg than vg so if it were me I and I wanted to add just one of pg or vg I would add vg. Both pg and vg can be bought from a lot of ecig stores and also from the larger pharmacies. Just make sure it is USP grade. I just bought 500 ml of each from Shoppers Drug Mart in Canada for about $11 ea. They have smaller sizes too. Good luck with it!