Reading jǐ is bound — it never stands alone or appears in casual speech. You only meet it inside formal/technical compounds:
供给 (supply),
配给 (ration),
给养 (military provisions),
给予 (formal 'to grant'),
给水 (water supply, engineering),
自给自足 (self-sufficient). For 'to give' in everyday speech, switch to the gěi reading.