My 4 month old dd has been an angel baby and was sleeping through at 8 weeks. Has now started waking at about 4 and again about 6. I used to be able to put her down for naps and bed awake and she would just fall asleep but she now always needs to be sucking to drop off. I've been reluctant to use a dummy as ds is still dependant on his at 22 months so she ends up sucking my finger. I was really hoping she would find her thumb but hasn't done yet. Do you think it would solve all my problems to just give her a dummy?