The hardest part with that age is getting into the habits -- and with so much going on and uncertainty, it's a struggle.
For Y1, I used I See Sam readers (there are free PDFs online), copywork (copy words and sentences onto either a whiteboard or paper from wherever), front and back of a page of maths www.homeschoolmath.net has free worksheet generator, though if you can afford and want something with more instruction details or more variety with word problems and such, Math Mammoth by the same person has a range of workbooks, both PDF and print. Some of mine required more due to SEN, but that's the academic foundation and light on set-up time for parents.
Beyond that, reading aloud (having them summarize it back or discuss the story/facts in non-fiction helps build important skills), exploring any spaces available to you, life skills, and google activities on any areas of interest you and them have.
For a routine, I would do after breakfast whichever area they're struggling with most first when they have the most focus, with whatever their favourite as a reward right after. So with my oldest, it was English tasks and then maths, while for all my other children it was maths followed by my reading a story, then them summarizing that before they worked on reading their own story & the rest of their English tasks after). I know others tend to be a slower warm up and benefit doing an easier task first, then a harder task, then a reward one might work better - it depends on the child.
Doing an hour in the morning and - if really worried - another hour after lunch with lots of free exploring and story time throughout the day (Librivox classic audio stories can be great) should be fine.