Yeah I know what you mean, I had a super chips for a Dodge that allowed custom shift tables.
You can edit the entire shift table in the bin.
You should have a table called part throttle shift speeds - normal mode.
You can set the up shift or down shift mph for throttle positions
0
6
12
18
25
31
37
43
50
56
62
68
75
81
87
93
100%
So if the low throttle shifts happen too fast, you can set those at a higher mph.
But speedo needs to match speed and shift points should be adjusted. Just make sure down shifts are lower value than upshift