Guide Hand

Recently had someone tell me I take my guide hand off extremely early. I shoot a decent %, but can definitely tell I get into streaks and struggle with consistency from time to time. Took some time to try holding my guide hand on the ball for longer, and found some consistency.

Any guide hand advice? Forms to study, things to practice, opinions on how important the guide has is to shooting especially how long you keep the guide hand attached to the ball?