I think it's normal to mourn the intimacy and dependency of the early baby days. With son no 1, he was reluctant to take a bottle at all, and got by on water and solids at the minders, made up for it by lots of night feeding. The twins did take bottles, I had to express at work as I got very engorged (point to note!) and they had milk from me at dawn, the moment I got in and then at night. I'd prob not change more than you need to. I think you can drop feeds in whatever order suits you, after 7m your supply is pretty robust.