My vet gave me 5 shots. My ball got a bad RI. It was probably do to stress of shipping (of the 15 snakes we aquired this year she was the only one that got anything). She was about 8-9 months old at the time. I took her to the vet the morning after I saw symptoms. The first vet I took her to treated her less agressively with oral Baytril and temp raises. After a week of treatment I noticed that her symptoms were getting worse. I took her to a different vet that ran an emergencey clinic (due to work schedule I wasn't able to get her in during normal working hours). He gave me the amikacin. I looked up amikacin in the Merck Veterinary Medicine Manual (used by vets to look up drug treatments of choice, etc.) and sure enough that is the one to give for snake RI, so I just trusted him and gave the shots. He prescribed one shot every three days, so that was 15 days of overall treatment. He also had me give water by syringe daily (not forced with a tube, just gently open the mouth and drip it in far enough back to miss the trachea) and assist feed a mouse pinky once a week. The reason is because antibiotics are hard on the kidneys. With a slow metabolism and an animal that isn't eating, you wan't to protect those kidneys as much as possible. She came out of it just fine 
I am new to breeding and to ball pythons too, but we have a 19 year old boa. I am just fascinated by the genetics of the balls and their much better size and temperment!
Best of luck and well wished for your little ones. Keep them seperate.
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Jessica
0.1 pastel jungle
1.1 spiders
1.0 het pied
0.1 pied
1.0 VPI axanthic poss het snow
0.1 het VPI axanthic
1.1 het clown
1.0 DH Jolliff snow
0.1 Albino het Jolliff snow