Not letting it scab is to help prevent scarring... meh.
OP: I'm old enough (48) to be starting in with the "well you know, young feller" type sermons.... I just can't help myself. Sheepish grin. So with that said, you know young feller you want to be real careful about injuries that make you limp; limping is bad juju for other parts of the body. So, if the Achilles messes up your walking, use a crutch or cane (!) for a few days until you can walk normally.
This is especially important with the knee and hip, when using them while an injury has them pulled out of proper orientation can cause a world of hurt in the form of cartilage or sac injuries, separate from the original injury.
All IMHO. Not a doctor, just have BTDT more than a few times with injuries.
Good luck healing up!!