Since the whole idea of a frog laying so many eggs *in one place* is to ensure the survival of at least two or three, after losses to predation (including eating their siblings), the only thing you can achieve by taking some away is assure that the predators win and that pond will be depopulated when the adults die off.
If you wait long enough and the frogs are successful enough, overcrowding will force some individuals to seek new ponds and they will start using yours without you having to lift a finger.
Moving newts about is £5000 fine per incident, apparently.
https://www.gov.uk/great-crested-newts-protection-surveys-and-licences
Indeed, how can you be sure you are not depriving a male, in the wild, of its mate if you take her to help out 'your' one?