When he does make it back to your rack from the quarantine I think it's a good idea to put extra holes in the tub. The added ventilation will help overall. I know in my rack I have been having a hard time with high humidity and have been monitoring it very closely. I had to put extra holes in the tubs until I got the humidity down to 56% -61%. Is this python of yours with the RI feeding? If he is there is a product called "REPTA BOOST" that you can supplement his food with. It is for stressed and convalescing reptiles. Breeding and nutritionally deficient herps as well. It's a weight based formula and is something you may want to consider to help with recurring medical issues. Talk it over with the vet and see what his take on it is. Stay in peace and not pieces.