Minor OCI - BLS Toronto - Mailing documents tips/advice?

Hi, Have anyone recently mailed in their OCI application & documents for a Minor with success from within Ontario, Canada?

I live 1.5 - 2 hrs away from Toronto and with a little one (few weeks old) to take care, its going to be quite difficult to do a walk in to the Toronto BLS center with long waiting, & hence I'm stuck with mailing in the documents after submitting the OCI application online. few Qs below and any advice is appreciated

1. To do the courier pickup - only way is to request it by calling the BLS support?

2. NO Originals & Only self attested copies should be mailed … right?

3. Any tips/advice not to get rejected (Will follow everything as per the instructions)?

Thanks