I was about 400 and lost 47 before my surgery last week, counting a one-week pre-op liquid diet. You should not have any problems. Just do what they tell you too, there are good reasons, like walking to get rid of excess co2 they fill you up with for the operation. Every surgeon seems to have a different variation of procedures, just do what they say. One thing I saw suggest, it to have sleeping arrangements ready for when you come home. I can't sleep on my back, I toss and turn, but I can sleep two n a recliner. All the guy crunching you do getting into and out of, and rolling in bed can aggravate the main incision area. A recliner to sleep in really helped. If you don't have one, arrange your bed so you can easily get into moving as little as possible, like moving a a table away. You might want some chewable gax-x tablets ready too, and pre-supply your post-op diet because you might not feel like doing much post-op, but I think that's for any surgery. Also, bring some slip-on shoes to walk in. During my walks in the hospital (every 4 hours), I just used the socks with the tiny grip thingies on them. Walking a lot on them was not comfortable, but I was also walking alot (according to them). My first walk was 5 laps on the floor, which turned out to be over a quarter mile. They were expecting 1 or 2 laps at most. I got up to 8 laps eventually, but the bad posture on just socks on hard floor was not working well, so I cut it back to 4. Sent from my XT1609 using BariatricPal mobile app