Hi @Chev, and welcome to the forum.
My plastic surgeon said it would take 6 - 8 months for my foobs to properly settle and I think he was right. It's a long wait.
I get your disappointment about size. But I'm unclear, are you feeling they are too small? Sorry if I'm being dopey!
My BMX and DIEP recon was exactly one year ago today. My plastic surgeon is a very peculiar man who I don't like at all. One of the reasons was that he first told me I couldn't have a DIEP, which I wanted as I didn't want implants. After telling me I could, he said he'd get me As to Bs. I had sagging E cup boobs and while I wanted to go smaller, I didn't want to go that small. By the time the op came round he said large Bs to small Cs. I'd done a LOT of psychological work to get adjusted to having a BMX, and having considerably smaller boobs, so I was pleased to hear this.
When I first saw them afterwards I thought they looked considerably larger than a small C. I asked the PS when I first saw him the day after the op, what size he thought they were. He said "You tell me". I really didn't know what to say. After a lengthy silence, I said, well I can't really tell right now and from this angle. He goes "Well you can tell me when you work it out." He's such a nasty man, but he is technically brilliant.
They have ended up being non-saggy D cups. A little larger than ideal. But as it's stomach fat, they gain and lose weight much easier than breast tissue, so if I can lose some more weight, they'll shrink a bit.
I don't love them, though I do like that they're my own warm flesh. I'm getting used to them and will get nipples at some point. Then tattoos! You've got a way to go so hang in there. I believe some plastic surgeons do an implant after a DIEP to increase size, so you should have options. Big hug, K xox