Well, five days of antibiotics completed yesterday, which was partly successful. I have had two good eggs three days running! One of the girls that hadn't laid for a couple of months has restarted which is good news. However, the two that are laying thin shelled eggs continue to do so. I've bought some nutridrops, so I'm giving them to the girls today and will wait a week before deciding on whether to carry out a forced moult (which I think I might just avoid anyway!).