it's been a long time indeed, and I think it's reasonable to send them a case-specific enquiry, explaining that because the medicals are coming to expiry date soon, and because of your child school schedule etc, you would need to plan ahead, and you can try and ask them if they are missing some papers, if they have found your daughter's medicals, and if they will be able to issue the PR before the expiry of medicals, or if they intend to extend it etc. - and hopefully you will get an answer. Even if you're not over the posted timeline, I think you could also ask your husband to investigate with his MP... to see if he can get some more information.
Hopefully they will answer so you can plan a little more, and bit less in the dark!
Good luck,
Sweden