Is business bank account needed for rental income

[Sweta Jain]

Hi, I am starting to self manage my rental property and have below Qs. Please help?

1. I understand its good idea to have a separate bank acc for rental income. Can it be a personal acc? I called WF and they said for business account I need a registered business like LLC etc which I do not have.

2. We will add a addendum to the lease to remove my rental property manager and add owner. Is there any other thing i need to do?

3. Do people just wait for tenants to give them checks/transfer rent or do we need to send a invoice every month to tenant for rent payment?

4. Should I use some SW for all this accounting? Please recommend a free one, as I have only one rental property so not sure i need too many features.

Thanks!