Eh bro, try to remember what they felt like when you first potted them into the 5 gal buckets without a watering. then feel how they feel now. if it is heavier than when you transplanted into 5 gall pots they need a watering. I really don't think they need water though if you watered 2 days ago. Usually when they are flowering and in 5 gal pots you need to water every 3 days. You can also try to stick your finger into the soil 3 inches deep and if youe feel any type of moisture then they are not ready for a watering. Also check the bottom drainage holes if they are damp your good you don't need a watering.