will freehandstand pushup make my progression for hs/pe 2 iM

i can do free handstand push ups but i went back to hs/pe 2 iM because of lack in shoulder mobility

My question is:

should i stop doing handstandpushups until my shouldermobility gets better and be able to do freestanding handstand pushup with correct form?

or where to stop in hollow back bress progession when the handstand is not in perfect form?

Keep progressing in the HBP independently of the HS mobility. However how did you get past the Korean and Russian dip progressions without adequate shoulder extension mobility?