I second being mindful of travel distances as places are deceptively far from each other in that area. 149 from Creede through Lake City and up towards Cimarron is a beautiful drive. You could do that and then swing back down to Ouray. Quray and Lake City offer a bounty of hiking opportunities.
What you want to hike will depend on your fitness and confidence carrying the 9 month old. And I'll note
a lot of the roads to some popular trails in the higher mountains, even some of the easier hikes, deteriorate really quickly in the San Juan Mountains.
There's a hike in Ouray called "Baby Bathtubs" which is appropriate for taking a baby too.
Big fan of getting to the end of the 2WD American Basin road out of Lake City and walking up the 4WD portion into the start of the basin or driving all the way up if you can. Lots of hikers will continue up to Handies Peak but you can wander a bit into the basin---should be lots of wildflowers at end of July.