Guessing you kept the first compound steady and layered the third one on top? Running 15mg of the original plus 6mg of the second weekly, along with a small amount of the third every four days, I'd say the third makes a modest dent in hunger, but going any higher brings on nausea for me personally. Only using these for maintenance at this point, having already shed the bulk of it a couple years before starting any of these, down to 64kg from 145 originally.
If that third compound delivers a real effect without rough side effects and cuts your intake meaningfully, that's exactly what you'd want to break past a stall, once you hit target, or if it curbs eating too aggressively, you can always scale the dose back down. I'd lean toward trying that third compound first rather than adding or switching to the second, especially given you've had zero side effects from the original and it's already delivered a solid 75-pound drop.