plant leaves drooping bad need help fixing problem

wzup everyone imma a newbie with a problem...my babies are drooping!! i think i may have overwatered and ive searched for a solution and all i can find are threads asking if they overwatered and people answereing and just saying yes but not with a solution as to fixin the problem. i have 4 plants that were in 1 gallon containers with fox farms soil. i watered then last sunday then found out i had to leave for a few days tuesday.. so tuesday night i watered each plant with about a liter of water a piece. a half liter of straight water then 30 mins later a half liter of 1/4 strength grow big.i left and returned friday night to find my leaves drooping. i immediately looked for ways to fix it and didnt find a solution. the next day i tranferred the plants to 3 gallon pots because i saw roots coming out of one of the container holes. i just wanna know if i did overwater what do i do from here on.. i just want my healthy looking plants back.. any help a b greatly appreciated also i got a pic here... also these plants are in their 3rd week of veg

dont water so much. it will be fine just skip a watering or 2 so it has time to dry somewhat. then only water when you can put your finger 2 inches in and it feels dry.

yah looks overwatered

Looks like you just overwatered , or might not have watered enuff , what i would do is wait till the soil drys up , the best way to tell when to water is when you stick your finger into the soil and it feels dry , if it only feels dry on the top and it feels moist/wet inside where you stuck your finger its fine it doesnt need water , but if its dry on top and inside where you stuck your finger then you need to water , dont water too much tho , you have to remember , weed is a weed , it can grow in extremely harsh inviroments , so i would rather underwater instead of overwater , and its good that you transplanted them into bigger pots , i dont think thats why they are drooping tho , just try not to water too much , hope this helped.