Russian dips progression

I found on internet some written resources on what kind of work I could even implement in my workout for achieving russian dips. These exercises are the progressions I worked and I’m still working for increasing strenght on muscles involved. I know i’ve been always weak on forearm/wrist and shoulder work and my age, now I’m 46, doesn’t help me for couldn’t never make a simple repetition of russian dip, now I achieved it, but still have to work on it for a while for improving form. I found these exe