Alright, so some back story. I had a couple surgeries this summer which caused complete lack of sensation of my penis after the first surgery and partial lack of sensation from the second. The reason behind this was because during long surgeries with your legs spread-I had some hip surgery and not replaced hips- nerves can be aggravated and sensation can be lost.
Basically, if you do the L.A.S's for a long enough time, this may be able to happen. GOOD NEWS is the nerves will "reprogram" themselves and sensation will come back. Possible bad news is that it could take a significant amount of time. Now, considering you probably didn't affect the nerves for 4 hours like my surgery, and that this is what is wrong with you (I have no idea of knowing for sure), then I would assume you would get normal feeling back into your penis in around 2 weeks max.
My doctor said it is normal for this to happen after a surgery like I had had and only said it would last around a week. Although this is true, going off completely no feeling after my first surgery, I didn't regain COMPLETE feeling in my penis for around a MONTH. Now I know this sounds discouraging, and it may be, but considering what I think you may be dealing with, I don't think you will have to worry about the full month.
Also, everyone and their nerves are going to be slightly different. This is my opinion, hope it brings you to ease. My best advice is to relax from your exercises until you can completely feel your penis and to give it around 2 weeks AT LEAST. No need to get stressed because that never helps.
P.S.-When I started to feel part of my penis but still couldn't get a full erection, I could cum as well. Food for thought!
Hopefully all works out well!