I have 3 goats: Leo is 4 weeks, Henry and Gifford are 11 weeks. Leo has not had any vaccinations yet, his breeder recommended CD/T starting at 4 weeks. The breeder of my other two gave CD/T at 8 weeks and recommended that they get it again at 90 days. Online most of the advice seems to be that you only give CD/T twice, once at 8 weeks and once 3 to 4 weeks later, but some sites recommend a 3-dose regimen (4, 8, and 12 weeks). These are my first goats so I haven't done vaccinations before (but I have experience giving them to puppies and horses). What is the best vaccination schedule? Also, should I be doing any other vaccinations right now?