@Dolly ji,
Please understand fundamental of Energy
We are requesting/praying VK as we worship god and we don't know how many prayers needed to fullfill a certain wish.
We do karma good karma and followed more and more but we don't know which one will give result.
Yes Energy will work from the very first stage but we don't know the quantity required to fullfill a wish, so regular intakes and increase frequency is always guided by Sir.
One more thing we can't justify if one wish will be filled in a day,week,a month or in once request only.
If you are charging water/ any homeopathic pills or other things then it can be consumed till it gets finished.
Please Send energy with the intention of Good outcome till it filled or follow your inner guidance.