I missed the age of the snake.
As already stated, feeding is not likely to help the situation. I see you only have one post here, and unfortunately I can't determine if you are a newer keeper or not. If your snake hasn't lost, or isn't visibly losing weight, there is no need for concern. Force feeding was probably the worst thing you could have done while your snake is still taking meds.
The royal python is known for going off feed for extended periods, sometimes a year can go by. These animals are able to self regulate their food intake and do it with great success. It is one reason they are one of the longest lived snake species.
It is very likely your snake has ceased feeding due to the illness and the antibiotics being administered. Its system is healing and playing catchup. Unless the animal was at a compromised weight prior to the illness there is no reason to worry.
Postal touched on the subject, and I agree, that feeding stresses the system, and isn't recommended.
You should recheck all of the husbandry, and let the snake recuperate on its own time. Handling should only be attempted to check the body and for cage cleanup.
Leave the snake alone at this point. Stress will weaken the system and could kill it.
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