Feeling overwhelmed

I’ve been with my partner a year. By three months we were engaged and living together, I left my car with my sister (who I lived with) because she needed it more than me and now I share a car with my bf, I’m not on my bf’s tenancy but landlord agreed I could live there and I’m on the council tax, I’m not on any of the bills and my bf doesn’t want me to be (he thinks it’s the mans job to provide financially, but I do give a couple of hundred each month and I buy the food), and now I’m getting bought out of my mortgage so I don’t have responsibilities for it anymore.

I think I’ve moved so quickly and given up so much in terms of independence and I just feel lost and like I don’t have anything of my own anymore. I was so close to my sister and now I don’t see her every day, I miss out on things in her life, I miss the pets we had together, I miss all the plans we used to make with each other because neither of us thought we would ever have someone, we were planning to be crazy cat lady spinsters together. I know I sound ridiculous and I’m very happy with my partner, but I miss the life I had, and almost grieving for the life I spent years planning but I’m not going to have now.

I adore my partner, I don’t want a life without him, maybe I just need to slow down and adjust, but how do I do that when everything is literally in full swing?? Wedding is booked, mortgage appointment booked, planning a baby, I think I’d confuse and upset him if I now turned round and said it’s too much too quick