jeno, all I can offer is, go with your gut feeling.
My Mum told me to put the baby on the potty, from the first time of it's nappy change, just hold it on there till it did a wee, then put it's nappy on! She said to do this / carry out this routine every time 'Baby' needed to be changed. Yes, I can honestly say that 'Baby' was well out off her nappies during the day by 10 months old and by the time she was 1 year old - none at night! Of course that meant that she was lifted and sat on the potty when we went to bed! No problem! Never did she, or the second one,ever wet the bed, and also, never did they ever get a dummy!
jeno, who knows who is right or who is wrong?!? Circumstances may not afford you to carry out the above routine. But all I will say is this. It is up to YOU to work out a routine suitable for both your kids and you - and more to the point for YOU to enforce it.