It's been a while so I thought I'd update to help anyone having the same problems ( and to ask another q!). Basically we have stuck with the no naps and the stripping at BT seems to have stopped (pleeeease! )
I think the transition is taking a while though - he is after all only 22 months - and he will sometimes drop off if in a car/buggy during the day and we have to wake him. Because of this I was questioning myself as to whether he really is dropping the nap or whether I'm pushing him and hes not ready but a recent holiday proved me right, I think, because we were in the car a lot meaning he sometimes napped between 30 mins and an hr. On those days either BT would take forever or he would wake for a couple of hours at night so I think that proved to me that naps are disruptive to his night sleep.
Only thing is for a good while we were getting 12 hr nights witjhno naps but recently we are getting almost habitual EWS - 5.40am - and for the past week or so, maybe longer, he's been waking early evening. Sometimes he's really upset, sometimes a quick cuddle is all it takes and he goes back to sleep. I try to get him to bed as early as poss - on a good day he is asleep by about 18.20. Is he in an OT vicious cycle do you think? Here are the last two days EASY
WU 5.4am
S nodded off for 5 mins at 10.30am in car
S nodded off for 10 mins at 17.10 in car (aaargh!)
BT not as bad as I expected following that late mini nap - asleep by 18.45
No NW
WU 5.4am
S nodded off in pram for 5 mins at 15.30, had to wake him
BT asleep by 18.20
NW 22.40 - quick cuddle *seems* to have settled him
Any ideas?