I think we were around 8-12 in 24hrs when DD was that age. I decided to start cutting some of her feeds though coz she spent far too long just comfort sucking. Sounds to me like you are doing a great job.

FWIW if its anything to go by DD still gets 4-7 BFs in 24hrs depending on how she goes at night. She can empty a side in 2-5 min and spends alomst a little too long just comfort sucking.