I have two ewes that I hope are in lamb and due in 10 weeks time, I have been reading up about feeding but have a question about the current weather conditions and how that affects how much and when, they have been on hay since the weather turned cold I.e frozen ground, and now it is even colder with laying snow I started feeding them ewe nuts too, is this too soon, i have tried to go with instinct on this and just hope I am right, any thoughts would help, thanks