Feeling tired after wet cupping

It sounds like you are treating yourself - is that correct? If so, I strongly advise against that. Further if your previous practitioner was correct and you have kidney qi deficiency - you should -not- be doing dispersive techniques such as wet cupping as it is very likely to be weakening to you and make your situation worse.

For the most part you should feel alright within a week so long as you don’t continue performing wet cupping on yourself.

If you are deficient you likely need techniques such as moxibustion, but I wouldn’t do anything unless directly recommended by a practitioner who is familiar with your overall health and can watch you over time.

Just rest and don’t continue to do it. The effects of it should cease within 3-7 days.