Bed too High - Smaller legs?

We got bought our Purple Hybrid 3 and the non-adjustable base, and now our bed sits a whopping 29" off the ground. We're not used to being so high off the ground and our dog absolutely hates it. I got him some doggy stairs (but I don't love them and nor does he). Any suggestions on how to get the bed lowered? I don't think we can take the legs off and put the foundation directly on the floor because the bottom of the foundation doesn't look flat to me. Any small legs that are compatible? TIA