I have a 3 month old baby and a nearly 3 year old.
The toddler attends nursery for three days a week. On those days I do classes with my baby like swimming, baby sensory and so on.
On the two days I have them both we do mixed age style classes, although I think my eldest is growing out of them a little bit so will probably explore alternatives after Christmas. He also does swimming on a Saturday morning.
Quite a few people seem surprised we do so much but there seems a lot on where we are, and it’s nice! So not so much an ‘AIBU’ - more of ‘am I being unusual/odd?’