I do leave him on his belly when he's struggling to let him figure out what he can and can't do, but if it gets to the point he's starting to get upset I help him out by putting him back in a sitting position, or we have a little cuddle.
An action shot of him trying to crawl. I would say excuse the dribble but he's a baby, that's what they do.
'If I tap the floor I may get somewhere.'
'I think I'll take a little break and play with the rug'
'One more try, maybe shouting will help.'
'Oh I give up!'
I know Osian will crawl when he's ready but it's not nice seeing him getting so annoyed that he can't do something.