Hello Flower Princess,
have you tried maybe a loose bun and using Fantasia IC clear gel? I use a goody ouchless band to hold my hair back and Fantasia IC gel to create the waves. I apply a little gel on the hair I plan to secure back and wait about ten minutes (waves start to appear) then I secure hair back w/ the band, wrapping the band around once. Sounds like you have more than enough new growth to create a wave pattern, maybe your pulling the hair back too tight? Try to loosen the bands your using. I hope this helps.
Happy to be 3B!
Suave Tropical Coconut Conditioner
Nextimage Curl & Wavy Curl Defining Conditioner & Detangler (never leave home w/o it)
Fantasia IC Sparklelites Gel
Bed Head TIGI Moisture Maniac
Suave Healthy Curls Curl Creme