Often with a clipless pedal it's possible to adjust the release spring tension.
Set-Up The Clipless Pedal
Identify the adjusting bolts. There is one for each foot position. A set of double-sided pedals have four adjustment bolts.
Equalise the tension on all bolts on the clipless pedal by screwing to the low – anti-clockwise – limit. Don’t force them past the limit. You will feel defined steps every quarter turn.
Adjust The Clipless Pedal
Test the entry and release force by clipping in and out of the clipless pedal.
Match Both Sides
Adjust one position, counting the number of quarter turn steps. Test again. If tension is satisfactory adjust all other positions to match, otherwise repeat from step 3 as necessary. Remember to make any further adjustments equal for all foot positions on the clipless pedal.