Hey bilster!
I like your moniker
Yup, I started on IP and switched to 90% alternatives, just using up what I have left. My losses have slowed, but they seem to be in line with where I should be.
I am now losing around 1.5lbs/week, my overall average being 2.9lbs/week. But I have just (sigh) 14 left to lose, so was expecting it to slow down.
I use the Premier Nutrition drinks from Costco as well, buy a couple boxes!! 18 for $27 in Medicine Hat and same bars as mentioned above. Plus Quest bars if you can find them and Isofemme, I have found at Shoppers and Walmart. But the Oh Yeah, small bars, are like a real chocolate bar IMO.
If you do want to try the Quest bars, I order them by the box from the US and can get you some, just PM me...they work out to $2.45 a bar with everything....WAY cheaper than IP

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Good luck