Journey of weight loss

How long did it take you to lose the 5-6 pounds? The 1-2 pound regain could be just water, food still in your stomach from a recently eaten meal or having not gone to the bathroom before weighing (basically meaning it very well might not be fat.). You don't need to exercise to lose weight, so take it easy after your surgery and focus on adjusting your calories (you are counting calories... right???? If not, you should start).

Granny-type advice, from experience: Eat at maintenance calories after surgery, for the acute period of healing (probably 4 weeks or so, but ask your doctor about healing rate for this specific thing).

We need calories for healing (may burn a small amount more at rest when significant healing is happening, even). We also need nutrition, especially but not exclusively adequate protein. Don't short-change that, especially if not severely obese (as it sounds like you're not). Time enough to lose these few pounds once you're healed. Avoiding gaining should be fine.

I kept up a calorie deficit after outpatient surgery (laparoscopic gallbladder removal), and came to be sorry I did it that way. I got weak and fatigued soon after - fortunately did heal OK - but the whole process and results would've been better if I'd eaten more while healing.

Don’t forget you will very likely experience some water weight gain following surgery, as your body retains water for healing.

Don’t panic when that happens. It will pass off once selling and pain diminishes.