Reddit reviews LAJA Imports New 12"Straight Hemostat Forceps Locking Clamps - Stainless Steel Good Quality

I agree that the main problem here is his feeding regimen. Feeding multiple prey items - even if their total weight is the same as that of an appropriate meal - is actually rather harsh on their digestive systems. Also, fuzzy mice are not very nutritious, so he's not getting the right ratio of fat/protein/bone. Six fuzzy mice is about the weight equivalent of a large adult mouse or small weaned rat, so he should be able to handle those instead.

Here is a good feeding guide, though since he is undersized, you'll need to adjust things. I would suggest a large mouse every two weeks until he is big enough to take a weaned rat. Boas can handle HUGE prey in relation to their body size, though it's best to not go bigger than their widest point. It's okay if it takes him a while to get it down - I have boas who will take upwards of an hour to eat, and others of the same size and feeding routine who gobble it down in five minutes.

Pick up a pair of hemostats (fancy word for snake feeding tongs) and use those to offer the prey. There's really nothing wrong with using hot dog tongs, but the hemostats are easier to use and maneuver.

It's okay if you don't handle him too frequently. Most snakes only tolerate handling, and prefer to be left alone anyways. Boas are generally docile snakes, and if you're only handling him when you need to clean the habitat, that is just fine!