No, do not wait to give them Calcium and a multivitamin, they should be getting that regardless of whether they are laying eggs or not, so should the male. All Dragons need a Calcium supplement 5 times a week and a multivitamin 2-3 times a week for the rest of their lives. Dragons bodies are extremely dependent on Calcium and proper
UVB light so they are able to absorb the calcium...SHE IS HAVING TREMORS BECAUSE SHE'S ALREADY SUFFERING FROM A CALCIUM DEFICIENCY! Tremors/twitching are the first signs/symptoms of MBD, and if all of your Dragons don't start getting Calcium 5 times a week and a multivitamin 2-3 times a week they are ALL going to start to develop MBD. The only reason that this female has started developing the MBD sooner than the others is because she has been deprived of adequate food and
UVB light by the other female...
And I know you were joking, but you absolutely cannot let the females and the male even see each other, it's not a funny situation for the females, it's extremely stressful for them to be in the presence of a male that is trying to mate with them. Especially the sick female, she can't take any more stress...I hope you are understanding the seriousness of her situation, as MBD will eventually cause paralysis in her back end, she will be unable to walk without flipping onto her back, she won't be able to climb without falling, and she'll start to develop bony deformities in her head, face, and spine. So the tremors are your warning sign that unless you separate her from the other Dragons, put her in her own tank alone with her own UVB tube mounted correctly, and start giving her (and ALL of your Dragons) Calcium 5 times a week and a multivitamin 2-3 times a week, she's going to stop eating, become very lethargic, and start to develop serious physical disabilities that are not reversible. So the tremors are your warning sign...