I stopped the fermentation at 18 %, add Pota and a bit of Brandy 500 mL and degas (SG 1.018). That was 2 weeks ago. This morning the SG was at 1.013 so it obviously it re-ferments. Is it going to hurt the wine if I re-add sugar, Pota and degas it again? I want the final SG to be at 1.020, now the alcohol is at 19 %.