Yes, you can freeze lasagna that has been in the refrigerator for three days, as long as it has been stored properly and hasn't exceeded the safe storage time. Freezing it at this point will help preserve its quality and prevent spoilage. Just make sure to wrap it tightly in plastic wrap or aluminum foil, or place it in an airtight container before freezing.
All I can is for a couple of days.
I keep mine up to 3 days. If you want to keep it longer, freeze it as soon as possible and take it out of freezer if you plan to use within a day.
2-3 days
Yes, you can prepare lasagna 2 days ahead of time by assembling it and storing it in the refrigerator. Just bake it when you're ready to eat.
My parents used to freeze all sorts of pasta dishes/meals after the kids moved out - that includes the left over pasta, sauce, sausage and meatballs too. (That's italian sausage though - not some popular breakfast product). Personally, I might be concerned if the ingredients of the lasagna had egg slices. That's a personal whim and I'd yeild to any competent response.
Cooked meat only keeps 3 days in the fridge: http://www.canfightbac.org/cpcfse/en/cookwell/ask/where_how/#218 If you've got leftovers that you might not want to eat that quickly - freeze them on the day you cook them (chill first). You can always defrost them tomorrow if you need them then.
3 days
Possibly 2-3 days at most.
A: Do not boil noodles, and do not cook the meat. Prepare sauce and let meat dethaw day before if wanted. A2: Or prepare the entire lasagna day before and cook in oven. Keep in fridge over night. Heat up servings seperately in microwave or enitre lasagna in oven at 250 Degrees {Note: The lasagna might be dryer if dont this way. }
September has 30 days, so a third of September is 10 days.
Two Days
Yes, it should be refrigerated, after cooking. Cover it , And I would keep it only for about 2-3 days after that.