Our pediatrician ordered these for us seperately!!  It can be done!  We are vaccinating but one at a time like I outlined above.    We choose to do it this way because of research I’ve read regarding the safest way to vaccinate is one at a time.  You can check out   www.mothering.org and look at the articles on vaccinations.  They have outlined the first 2 international conferences on vaccines.  Very interesting reading!!