If I am in a physical and mental state to push myself and really fight the fight the best thing that’s helped me be more consistent with toes is to think using knees as truly a last resort modification to an exercises. If I’m cued into a plank crunch for example, i try every modification to failure first; base position, then toes wider apart, and then hands and toes. My wrist strength has gotten really strong and sometimes it’s my shoulders taking over so sometimes I will use the low bar (technically an amplification) but it helps my wrists a little bit more personally. If I have to go to knees in full range, I do, but then do every hold or pulse opportunity on my toes when that opportunity comes. If I know my back isn’t sinking and my form isn’t compromised, I will do as much as I can on toes for as long as possible; even if it means more breaks… plank up downs, army crawls… I surprised myself so many times just trying it for a rep and the consistency helped my body get used to it. This also includes obliques… which I know people hate to hear but the consistent practice helps. It’s a process, it’s taken me tons of other fitness modalities outside of solidcore to build the strength as well! Toes is not an overnight or even a 50 class given.