GIrth gains

I have been PEing for about 12 years off and on. My goal has been girth, but definitely peaked. I have gained an inch in girth through clamping and erect jelqing. I am stuck at just under 6” girth. I am currently doing erect jelqing twice a week, thinking I need more rest time, was doing at least four times a week. I can erect jelq for about 20-25 minutes and get up to about 6 3/4, but can’t seem to cement it. So, I am thinking of getting a bath mate and see if this will give me another 1/2 inch. My goal is a minimal of 6.5, goal 6 3/4 to 7”. I am not sure if bath mate will work and cement it or not. Maybe since done so long, I have maxed out.

If anyone has any thoughts, please advise.

Thanks!