You can waste your knees and ankles, with SPD`s not right ajusted, as said above

1: get on the bike with normal shoes, look at the natural position of your feet on flat pedals

2: try to imitate, as far as possible this natural position on your SPD shoes, by moving the cleats.

3: pay extra attention with a new position on pain in the joints.

4: If it fits, grease and tighten your cleatbolts for the second time, these screws may come loose.

Good luck with this improvement on your bike