I hope everything will go smoothly without any interruption entire trip.  If in case the road past Besisahar is blocked due to the rain, then we will try to find an alternative trekking trail to Koto. It depends on the following day's situation, we may cross the blocked road by walking and catch the jeep/bus to the destination and continue the trip. Or if it's heavy rainfall then, it would be better to do some other trek nearby Pokhara Ghorepani Pun Hill trek Annapurna, which is no risk of landslide and flood.    Let’s, hope positively, everything will be good.  Respect "The Law of Attraction".