Instead of satisfying the host's cravings (food that the impregnated dino will ask for) which could be anything literally ANYTHING even a giga egg, just get some daeodons (2 to 3 at least) and give them a TON of meat, and they'll heal the dino, it's level will not be so high

I got a bronto (which has 100% host size) impregnated by a lv 112 rhynio,yet the juvenile was only lv 67 ( I satisfied the first two cravings cuz they were easy)