Trying to get a large amount of data (column type is "text") from an MS SQL Server

I want to get like 300MB of data (text column) out of an MS SQL Server, but with the library I'm using I'm getting an out-of-memory exception as soon as I try to access the field. Unfortunately, I'm bound to that library and cannot switch to something else. I've tried getting chunks using SUBSTRING(), but that returns varchar and the max len is 8000, so getting 300MB in chunks of 8K would take forever. Is there any other way to do this? If I could get that 300MB in 3x 100MB chunks that would be fine, 100MB don't seem to throw an exception. Maybe to somehow split the data server-side? MS SQL Server Version is 14.0.3436.1 Thanks in advance