@SPS-DEV-22
First, make sure your form has an ample amount of columns to support the widths that you have and want. Default is 3. More control of placement would be with 12.
Change that first since your field is right after the one that you want it next to.
You're not really changing the order of the fields in your case - just the location/placement. So the above should give you what you need.
However, in the future, if you really DO want to move a field to a completely different order in the list of fields, then in the form, open the Edit Fields and then drag and drop the field in the field list.
I hope this is helpful for you.