Are you saying that you've gained a lb since yesterday? Step away from the scales!!! The whole reason behind only weighing once a week is that your weight can fluctuate massively day to day, and you won't see a true result.
From what you have written there, stick to that and you will certainly lose weight. But deprive yourself of any treats, and you will fold, and binge and some point. Then you'll believe that you've failed in your bid to lose weight, and give up. If you want to follow slimming world, then do so and use the Syn allowance your given
Lol old habits die hard, scales have been removed. I've always dine atkins before but hasn't done my health much good and I put it back on really fast. I suppose it just seems odd eating so much. I have loads to lose to