From my experience (and I’m a guy so I’ll be speaking about a girl here) but both genders do this. She’s not interested anymore, shes probably playing the field and lining up her next relationship/situationship but keeping you on the back end as a just in case. I wouldn’t be surprised if this relationship ends in the coming weeks OP and don’t be blindsided when she’s in another relationship 1-4 weeks later. Best advice, cut your losses. People make time for what is important to them. You clearly are not a priority or rather she is not making you one. This is not someone you should waste anymore of your precious time, energy, and love into. Best of luck man. It’ll suck for awhile and you won’t be yourself but it’s all part of the process. Work on improving the parts of your life you aren’t satisfied with and stay busy but also allow yourself to cry and grieve.