\’A little loss of sensation comes with the game\’. Really? Can others verify this?
No. The only time you should feel any loss of sensation or numbness is maybe at the end of a very long stretching or hanging session, and even then it should be very minimal. You absolutely should not have any loss of sensation when you aren’t PE’ing. Piet is right, if you are experiencing loss of sensation during an off day or hours after your PE session, it’s definitely a sign of doing something wrong.
My guess would be that you’re applying too much pressure to your glans during the end of your jelq stroke and/or during manual stretching. I would recommend stopping your jelq stroke short of your glans - forget about trying to stretch during jelqing - and while manual stretching, move your grip back and clamp down a little more. Basically, always be cognisant of how much pressure is being applied to your glans, make sure it’s not much.
In the meantime take a break until the sensation comes back.