Potty training at 20 months

Kennley started showing some interest in Potty training in December of last year. So we tried it and she loved it. She had to have her readers digest before she even sat down. She did really well for a while and would even tell us when she had to go. Her interest lasted a couple months. She still wants to go sit on the potty but nothing happens. Hopefully she is completly potty trained by December of this year!