Older one is very temperamental

So our #1 was 14 months old when #2 was born.

She's at nursery on weekdays and seem fine there based on teacher feedback.

Everything was going fine the first month of #2.

But now in the second month, #1 i(now 15months old) is extremely moody when she's home - lots of cries, lots of crisis, lots of whining. She wants to be in my arm (dad) a lot, and not so much mom.

We do make the effort to spend more time with her, but we do have #1 to cater for.

Anyone went through the same thing and any tips?

I was told: patience