No, you dont need to treat for cocci once a month. Healthy goats dont often get cocci. All you need to do medication-wise is keep up with the yearly vaccinations, and find a worming schedule that works for you. Definitly not every 3 weeks! We only worm several times a year, but we have several different pastures, which dilutes the worm population and slows the worm cycle.
If you dont have a problem with lice, you dont need to dust them. Just look them over in the spring, through all that wooly winter hair, and see if they have lots of dandruff and if their dandruff has legs. Then you need to dust. Lice do not often bother goats that are healthy, are in clean living quarters, and have access to sunlight and fresh air.
The goats should defintily give in after a while. They'll get hungry for their grain. 2 days isnt very long, and before you know it they will be eating the new mix like it is all the food they get!
How big are they exactly? What breed? They may have just stopped growing so fast, but may be still growing. An easy way to check is to take a picture of each one every month or so, and then you can look back and see thier growth rate from kid to young adult.
Do you have any of these books? (below) Check them out from a library, or just buy them, if oyu dont. I guarentee they are excellent, and should be on any goatkeepers shelf!
Storey's Guide to Raising Goats; by Jerry Belanger
This book has general goat info. It is the one I use most for genreal reference.
The Illustrated Standard of the Dairy Goat; by Nancy Lee Owen
This book tell you what your goats are supposed to look like.
Extension Goat Handbook; by George F. W. Haenlein and Donald L. Ace
This is a pretty "in depth" book. It explains everything about manegment, nutrition, genetics, milk, anatomy, health, etc... in great detail. You name it, it explains it.
Caprine Supply's Goatkeeping 101, second edition
This is a good general reference book that is a collection of articles from caprine supply's magazine. It also contains resources, such as goat clubs, associations, magazines, and registries for the US.
Please, give these books a try! They will answer most of your questions!
Good luck.
