Go for it, I have lost a lot and gained it all back about three times in my life. Realising that diet and exercise will fail you is devastating. Now I am 3,5 weeks bypassed, doing well.
Yes, same issue! 3,5 weeks post-op, mix of soft protein foods and veg, every 3-4 days I hit this problem and fall on the sofa right after the meal. I wonder if slowing down even more while eating could help.