Hi Teddy,
Wide set breasts are common, even in cis-female populations… but probably more so upon cis-male populations because of larger rib cages. I'm having success using the topical creams I introduced last year, meaning I alternate between using estradiol and progesterone on opposing days. As we know estradiol elongates breasts while progesterone induces side branching and initiates growth hormone when using topical progesterone. I confine the estradiol (E2) and progesterone cream (PC) to the inner quadrants between my breasts (alternating each day). Imho it's working… like with anything using NBE/HRT to grow breasts it's not an overnight success, so I'd set your expectations in accordance. Alternatively, I've used a breast pump positioned closer to center mass to help initiate growth, though you can only use one dome at a time due to the positioning aspect. If using this application I'd confine the two creams to the above description only as opposed to the entire breasts at a time.
Good luck