How can I get him from the little potty to the toilet?

when you go out, instead of using diapers, bring a little travel folding potty in the car with you.

as long as he is going in a potty vs a diaper, I wouldn't worry too much if it is the small or big potty. he will get on the big potty when he feels more comfortable. you could try to convince him with a special treats or toys. otherwise don't worry, he will be fine!

It is very normal for children to be apprehensive the first time you introduced the adult toilet. Children are friendlier toward a small plastic potty that is theirs and on which they can sit down by themselves. On his little potty, his feet stays on the floor, and the height won't make him insecure.But on adult toilet, it will put him high up in the air, an uncomfortable position in which to try to relax and let go of his movements.

My son is three and four months old, and he sit on the adult toilet already (with child-size toilet seat that fits). At first, he is also a little apprehensive in using the adult toilet, a sturdy strep stool helps so he can climb up by himself. We encourage him to sit by praise or small rewards, but didn't spend time urging or pushing him if he doesn't want to. He is also fascinated by flushing his BM and want to do it himself.

Try another time or another day sitting him in the adult toilet. Someday when he's BM or urine does goes into the toilet, it will help him to understand and cooperate. Goodluck.

Hope this helps.

avoid a potty chair & start with the toilet -buy a step stool so that the child can reach it & the sink. remember that potty training can take up to age 6 depending on the maturity & development of your child's bladder & bowels. continue to encourage & never punish.