I was working late today and tried to plaster the curved bay when I got in from work. I did the other three walls last night after work and saved the bay for tonight. Problem is, the first coat took too long and now it's too late to mix up the second coat so my first is going to be dry by tomorrow evening when n get in from work. Should I PVA and slap on one coat or PVA it and stick on two coats because I shouldn't have started so late?