I'd really recommend getting the microscope and looking very carefully at your skin to see if there are actually scabies there and your skin just isn't irritated. 30 days of ivermectin is a little extreme. The reason I did two doses in two days was to build up a larger amount in my system. The half life for ivermectin is about 18 hours so if you do it every day you will continue to build up larger and larger amounts in your body which could be dangerous.

A couple of things to keep in mind if you do ivermectin again - ivermectin has no ovicidal properties so that is why you need to use it multiple times. The goal is to kill all mature mites and then reuse it again after eggs have hatched and the mites' nervous system has developed sufficiently to be susceptible to ivermectin. It takes about 14 days for a mite to mature enough to begin laying eggs again so ivermectin isn't something you need to do every day. Ideally you want to do it again after 7 days.

A few other studies I have read put the standard 200ug/kg dose of ivermectin at just the threshold of lethality for scabies which is why when I did the horse paste I increased the dose a bit higher and did it multiple days in a row. Although ivermectin has a wide safety margin you probably shouldn't take it every day. I assume this is the paste you used (https://www.amazon.com/Ivermectin-Paste-Dewormer-Flavor-3-Pack/dp/B01LXKF2VW/) ? This one has markings to deliver 200ug/kg in 250lb increments. If you took a dose meant for 250lbs and you are 180lbs you would get ~280ug/kg. If you really wanted to increase the dose you could take a dose for 500lbs which would be 560ug/kg ( a lot). The LD50 ( dose that will kill 50% of people) of ivermectin is >15000ug/kg so it should be relatively safe if you're healthy but I wouldn't recommend it.

I bought this from amazon:

Ivermectin Paste Dewormer - 6.08g dose @ 1.87% Apple Flavor (3-Pack) https://www.amazon.com/dp/B01LXKF2VW/ref=cm_sw_r_cp_api_i_8H3uCbDRY533C