How to handle a very needy student

I'm in my second semester teaching community college (have taught at higher ed level since 2017), and this winter go-round I have a student who is very needy.

For reference, our course began on Thursday, and I have already had three emails from this student asking:

• How soon are grades posted after an assignment is due (reasonable)
• Can I do early grading (EDIT: I have already told this student that I won't do this)
• Can I give feedback on an assignment (a short primary source paper with very straightforward instructions) before it is due
• Can I look at her submitted test and let her know how well she did on the exam (I will probably say something to the extent of she will just need to read my comments on the assignment)

I'm trying to find some way of showing this student that I am available, that I care, and that I am willing to help (the course is entirely online), but I feel that I need to draw a boundary somewhere/explain what are appropriate or inappropriate requests of my time as an instructor to nip this in the bud. TIA for your advice/thoughts!