Preschooler Regressing in Lockdown

[JimmyJam2019]

I'm sure there are no answers but just guaging if anyone in the same boat. My dd is 4 in July and as the weeks go on she is regressing in a number of areas.
My husband is very busy as a result of covid19 and working almost 7 days a week, so it is me and my girls (younger DD is 8mo) most of the time
My main concern is toileting. She has been dry for well over a year but in the last few weeks started having at least one accident a day. It seems to be attention seeking, as often when I'm nappy changing or making a bottle for her sister.
She's started napping during the day and she is awake in the night for hours chatting to herself and then sleeping in until 9/10am to compensate (would be great to have a lie in if I didn't have the baby!)
Alot of things are just due to being lazy, like not dressing herself or doing shoes, which she could do fine.
I know alot of kids are throwing more tantrums etc at the moment and we have all that to contend with too.
I've given up trying to do any activities we get sent home from nursery, as she has lost interest in so many activities.

It does sound as if she could do with some more structure to her day. Tempting as it probably is to let her have a lie in, I'd be tempted to get her up at 7am tomorrow. She'll be grumpy but don't let that put you off.

I'd get her dressed, give her breakfast and get her outside. Has she got a scooter so that you could go on a long walk? The sunlight will help to reset her circadian rhythm and the exercise should help her to sleep at night too.

If she does nap during the day, I'd wake her straightaway. If you do let her sleep, only let her have 45 minutes as this is one complete sleep cycle.

As for the toilet. Could you get her to bring you things when you change DC2 so that she feels useful or get her to use the potty at the same time. You could tell her that you want her to show DC2 how it's done.

She will get through this though, so try not to worry too much. She won't be wetting herself or sleeping till 10 in September and it really doesn't matter if she doesn't even look at the stuff from Nursery