I’m a member of the ‘ruptured biceps tendon s/p surgical repair club’ myself (Class of 2001). Like @roscop12, I had terrible ‘forearm’ pain for years prior to the rupture. (The distal biceps inserts on the forearm deep to the brachioradialis, so many misinterpret the pain as originating from that muscle.) The moment I ruptured the tendon, I realized two things: One, I had been misinterpreting my forearm pain all those years, and Two, that my tendon issues stemmed from a dumb workout routine.
And that’s the part you need to correct right away if you wish to avoid having a lifetime of biceps issues, like me. (I still have pain, mainly on the unruptured side.) Simply put, you’re stressing your biceps tendons too much, either in terms of workload or frequency (or both). If you want, I’ll help you optimize your program to maximize the odds you’ll never have to ‘graduate.’ If interested, post your routine.