Struggling to keep my legs under me when spinning

Am looking for any advice, drills or cues that might help me with keeping my one foot centred when I’m doing heel/toe spins.

My foot that is on the toe is always drifting out to the side which stops my spin at about 2 rotations. Is it just a case of drilling heel toe manuals until I’m more confident or are there other things I need to work on also?