6.5 months and still in Moses basket....

[tri10]

Dd2 is 6.5 months and still sleeping in her Moses basket at night (or in our bed) she will not sleep in the cot and if put in there asleep wakes up after 10 mins. I think it's because the mattress is very flat and she is used the Moses basket being slightly curved with her weight. Any had anything similar? Thinking about trying her on our old matress on the floor but worried I will regret when she's crawling.

Have you tried an incline wedge in the cot?

Books under one end of the cot to make a slope?
Ds was in his basket until 7mo but it was either on my bed or on the cotbed, so flat - can you put the basket in the cot?

Have you tried putting something like a sheepskin for her to sleep on in the moses basket? That makes the transition a little easier as they are still sleeping on the same surface.