I just happened to catch your original post, What kind of enclosure are you using? What kind of humidity level do you have going on in the tank? Your temps seem fine but if you are keeping him in a smaller glass tank (or any glass tank.) with a screen or wire top you may be losing humidity and slow cooking him.
There is some kind of issue going on, puking is not good Unless you have feed them to the point of nothing more being able to fit in them (still not good but for different reason.). Monitors should be willing to eat anything you throw at them any and every day of the week. I have had a very busy week and weekend and skipped a few feedings here at home. I fully expect to be chased and attacked when I go to throw food at at some monitors after this post. that is how waters should act. Anything less is not right. You may want to see if you have a GOOD reptile vet in your area and bring him in for a check up as well. Ask around at local reptile shops or a local herp society and see if someone recommends one. But that aside I would check your set up first.

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