Astanga Hrudaya
हिता यवागूः स्नेहाढ्या सात्म्यतः पयसाऽथवा। सप्तरात्रात्परं चास्यै क्रमशो बृंहणं हितम्॥९८॥
or yavagu prepared from milk should be given gradually after seven days gradual introduction of bulk promoting foods to her is ideal meat should no be used earlier to the lapse of twelve days.
english translation