If you have reached your goal weight or are close to it, how much Protein do you aim for everyday? What is the source?

I still aim for 100 grams per day, per my surgeon's recommendations. I'm very active though so that's why he insists I have a higher protein intake. I think for my height/weight, it would normally be somewhere around 48-60 grams per day if my activity level was more that of the average person. However, I run(distance running) and do weight training and, if I don't run, I do some sort of cross training. I would talk to your surgeon and see what his recommendations for you are because protein needs can vary a lot between individuals.

My surgeon recommends (your weight) x 0.3 grams of Protein.

So a 150lb individual would require 50 grams of protein