Tested my 1RM on Curl (back against a wall) :

Left Arm : 29kg PR (the left arm was trained once every 4 days)
Right Arm : 26kg (1kg weaker compared to 3 weeks ago, the Right Arm was trained once every 2 days)

I cannot continue to make gains if my frequency is too high. I thought the rate of progression would be faster with increased frequency but it makes no difference. From a Daily Frequency to Once every 4 days, the rate of progression is the same. It's why I'll decrease frequency to 1/4 days for the Right Arm (Floor Press and Curl) and try 1/6 days for the Left Arm and Deadlift. I don't want to take the risk of overtraining for the Deadlift and Left Arm and I also want to see if I can maintain my rate of progress with such a low frequency.

BTW I never curled that much back against a wall. A little PR but it's always a pleasure.