As a junior engineer, this is how I felt. Before the pandemic, getting help was as easy as sending a ping and rolling my chair over. Now, ironically, it's far harder to get help, as getting into a meeting (even a short, impromptu one) is a significantly bigger deal.
I go into a minor state of social anxiety and just struggle to get anything done for a good 10 minutes before a meeting. Mainly because there's far more of a "I'm interrupting this person" feeling when I can't see their screen.
There's a little bit formality with it, but I've also found that "hey, let me record this" is a super power. It makes it a lot less critical that you understand 100% up front and then it's there for reference.
Send them a zoom link on slack, saying you want their input on something. Clicking on the link is literally their job. Source: I'm often the recipient of those zoom links.
(And if you don't get a satisfactory response, get another job where there are helpful senior staff).
I go into a minor state of social anxiety and just struggle to get anything done for a good 10 minutes before a meeting. Mainly because there's far more of a "I'm interrupting this person" feeling when I can't see their screen.