How many times can you run bud through bubble bags?

Hey, first time making bubble hash and so far so good

I'm just wondering how many times you would recommend running the water through the same bud? I'm on my 4th go, and on the 3rd time the hash started looking greener... does that mean I'm losing potency and there is more leaf matter?

Should I even bother with the 4th round?

For anybody who finds this, I wouldn't recommend a fourth time, got barely anything... 3 times tops!