I have only read to page 113 so please forgive me if this been asked and answered already. I know that some of you use SF pudding and some use regular. A small box of SF pudding is .8 oz and a small box of regular is 3.5 oz. Will that make a huge difference in the results? Or should I use more SF pudding to equal the weight of the regular? TIA

Adding more by weight is not necessary. It will just give you more pudding

I'm not sure what you're using the pudding for. I'm assuming adding it to a cake mix.

In which case---the reason the SF pudding weighs less is because the sweetener they use in it weighs less than sugar.

Don't keep adding until you reach the weight of regular pudding or you're going to have one big bowling-ball of a mess!

I've used SF when I've run out of regular, 1/2 package as I always do and it's been fine.