Sleep Longer!

Alright, this seems to be thing biggest issue we all post about. We did the Ferber Method successfully and my girl puts herself down now on her own. We are about 2 weeks in. BUT she wakes up and is ready to start her day at like 4 in the morning. 😴 I work and so does my husband. So I have to get up at 6 and like to actually sleep until then. 😂 The only way I can her her to sleep longer is by putting her in bed with us and then she will fall back to sleep. Why in the world is she waking up at 4 ready to start her day?! She goes to bed between 7:30 and 8.