How to play like where to place baby??? and will there be a loli content in this?
You have two rooms, the breeding room and the lactation room. Move babies to the lactation room and they'll grow pending there is a woman, human or monster, there. As for loli content, currently there isn't any beyond the female goblins being shortstacks and there doesn't seem to be any loli content planned in the near future, as the next race being added is big titty elves and we have no info on what the next race after that will be too my knowledge.
That being said assuming it's just going to be the MBM races being ported over there are only three "loli" races, however two of them are shortstacks (dwarves and sheep girls) with only one actual flat chested loli race (bunny girls). As for a loli development stage like MBM, seems unlikely if they haven't been working on it yet as it'd be a lot easier to do if they start working on it while there are few races than later when there is more. At the very least if it is planned but not to be started early it wont be until much closer to the end of development. Though considering there is planned shota content in shota MC which was temp removed along with Rune during the major overhaul a while back, it'd be weird if they didn't also add proper loli content as well.