It's pretty much a case of "your mileage may vary". I was told of all kinds of things that could happen - feeling overly nauseous, hair falling out in clumps, things like that - but I never ran into any of that. And when it comes time to eat food, I generally do not have an issue. That being said, I confess to being a little surprised that six weeks out, you were able to take in that much. Most of what I've been getting from the surgeon or the nutritionist is "take it slow".
I'm just over nine weeks post-op myself and still testing the waters (I had potatoes - shredded "hash brown" types - for the first time since the surgery this past weekend, and I managed okay), but what I would suggest would be to dial it back if you're not 100% sure you should be going at the rate you are, regardless of whether or not you can. "One day at a time" and "it's not a sprint, it's a marathon", and all the other one-liners my surgeon's office has given me, heh heh.