My bp was 1,400 grams when I finally got him on a regular feeding schedule. During the 3-4 year period where he may have eaten a dozen times (quite literally), he was maybe 1,100-1,200. I ended up settling on rats 40-80 grams every 2-3 weeks, because the usual 80-150 gram medium rats just meant he wanted to eat every 2 months. He held a heavier weight and never missed meal eating the smalls every 2-3 weeks vs the mediums however often I could get him to take them. He was 13 when he passed, so maybe a baby is more ok with bigger prey items, but I personally would just be feeding smalls every other week myself.