I'd certainly think upping it 20% per week is a fine plan, and you could probably go a lot faster.
If I started vinegar what's a good starting dose? I've read w/ vodka when you get to your preferred nitrate reading you cut your dose in half & that's your maint dose per day. Does the same apply w/ vinegar? Also thought I read somewhere that (w/ vodka) if maint dose is greater than 5ml it's preferred to split the dose throughout the day & only dose w/ lots are on. Wondering if this is the same w/ vinegar?