It's pretty difficult to keep watering to any kind of schedule. Various factors can arise that would make any sort of established routine not desirable.

Keep the soil just evely moist. Do not allow it to dry out completely. Generally, less water is necessary in winter. And use tepid or room temperature water. And watch out for indoor temps - this plant likes it warm - 70-80F.

They mostly grow as epyphites, so a fast draining orchid type soil mix suits them. And with that type of soil you'd need to water it more frequently but without any worries of over watering it. Some Aeschynanthus species are fairly cold tolerant, others are very much more tropical in their requirements. It pays to know which one you're dealing with. This is a link to site which might help you more.

Here is a link that might be useful: Aeschynanthus

Hi there, thanks so much for your replies. The plant I have is a radicals "mona Lisa" I think. I have had another good look at it and it appears to be just one stem that is dropping its leaves. I can't see any damage but I will keep an eye on it and see how it goes
Kind regards

Hi there, thanks so much for your replies. The plant I have is a radicans"mona Lisa" I think. I have had another good look at it and it appears to be just one stem that is dropping its leaves. I can't see any damage but I will keep an eye on it and see how it goes
Kind regards