Weaning + Water intake at 8 months

Hi! FTM here. Can anyone share how much water to give 8 month old baby who is fully formula fed? As for weaning, what types of meal/food to give? I am quite stressed out as I am clueless how to prepare weaning food for baby. Does it take long to prepare? I am currently working full time, so on weekdays, I only have dinner time to let baby try weaning food. Will that be sufficient? I am afraid that I have delayed baby’s weaning journey. He is 8 months now and hardly try any variety of food 😭