I have 3 one gallon batches going that I have moved to secondary after almost 3 weeks in primary. There is not a bit of sugar left In it and I am wanting to sweeten to taste and carbonate for a couple days and than heat pasteurize per the sticky in this forum. Using frozen cans of concentrate to sweeten, do you think I will have any issues bottling and leaving for 3-4 days and than heat pasteurize it? I'm. Not wanting to open a bottle every day, and I'm not looking to carbonate a ton, just looking for a tiny bit of sparkle and to sweeten it good. I just don't want exploding bottles. Think I will be 100% safe for 4 days of carbonating before I kill the yeast?