Menstural Bleeding not stopping. Age?

My mom is  46YO her Menstural Bleeding has not stopped even after 23 days.She has been taking regestrone 3 times daily.Her scan report showed she has adenomyoma & 2 fibroids1*1.6mm endometria thickness was 21mm & biopsy was done 3 weeks ago the report says it's thickened due to harmonal influence.During her previous periods bleeding stopped after taking divery but this time nothing is working.Her bood tests & urine routine results are normal. As the bleeding has not stopped even after taking regestrone 3 times per day for 15 days ,3 days ago the doctor gave pause injection & suggested to take tropic 650 tablet 3 times for 3 days with regestrone .Even after taking both the tablet her bleeding is not reduced. She says her bleeding is maximum in the mornings as soon as she wakes up. Because of the bleeding she is getting bad abdomen cramps. She is very worried that her bleeding is not stopping. Please suggest some remedy to stop bleeding. Is this problem normal amongst women of her age?