I'm not sure how you'd do it differently on a small scale, but on our farm the lambs need to be scratched against orf (with Scabivax) and vaccinated against clostridial diseases such as Pasteurella pneumonia, with Heptavac P or Ovivac P. They may also be dosed against/for coccidiosis.
The ewes are wormed within 2 months of lambing, their feet are treated if need be etc.
This is a bit further down the line, but around a month before the lambs are weaned, they are given a booster injection with Heptavac, wormed and a check is kept on for any blowfly strike when the weather is warm.
Good luck!