I have never grown then in pots but I do know that they get deep roots. is your pot big enohgh?

they are actually planted in large bins, lol. it was my mother's idea. However, the leaves on the vine is very healthy. Last couple of days, i have notice a few bottle gourds larger than the usual dying ones, fingers cross, maybe they would survive. couple of weeks ago i have began to hand pollenate the female flowers. only time will tell whether they survive or not. I am keeping my eyes on those bottle gourds.

That happens a lot when they are young. The next ones should start to hang on and grow. If its really hot they will drop off too.