Goats milk is often available in many larger grocery stores. Kroger sells it.
A good health food store probably does too.
Also, if your wife has plenty of breast milk, which should be the case if she is
nursing frequently, she can use a breast pump to pump extra breast milk for
those times when the baby needs a substitute bottle. Use only sterile glass
bottles. My daughter did this when she returned to work when her baby was
8 weeks old.
Carrots are rather high in sugar content - Diabetics are warned about eating
too many of them.
Also , the suggest of finding a La Lache League group is an excellent one. I
belonged to one years ago when I breast-fed my first 2 children. 50 and 49
years ago. A truly great support system!
Good luck to you, your wife and your precious little new baby!