how to be successful in potty training 29 months old

I am trying hard to potty train my daughter who is 29 months old. Firstly I tried with diapers and pull ups on but she didn’t want to get them changed and I being pregnant and having back pain couldn’t do much, so I decided to try without diapers on.
Since then its been few days and only accidents are happening, sometimes she pees every 20 min or so. I am running after her and making her sit on potty seat again and again but my timings go wrong all the time that only increases my work and back pain.
Please suggest me where i am wrong and how to achieve my goal soon. She tell after she gets wet. I want to train her before second one arrives in Sept insha ALLAH.

Thanks in advance.

Re: how to be successful in potty training 29 months old

One of my coworkers says, the best way to potty train is by keeping the child without diapers.