Both could very well be true , not a problem nor a contradiction , IR first took the parents to where he found fish and then they likely went their separate ways exploring up or down the creek. A bit later the parents went to get DeOrr thinking he would like to see the minnows.
Totally agree. It seems under those circumstances with the parents and IR walking away, then splitting up, baby Deoor walks away from GGP... The first person he could have run into might have been IR. Is it possible IR could have just scared him off? IR made him run away in the wrong direction? Accidentally or on purpose? Just mulling this situation over for possible scenarios. JMO.