Rajinder Nijjhar wrote:

I did bud grafting couple of weeks ago and winter has set in. It was a bit
difficult to uplift the bark but I did manage. I will leave it for a month
as during the winter nothing is going to happen.

Most places recommend bud grafting in summer, not that I've done it - I've
stuck to scion wood grafting in early spring. It'll be interesting to know
how you get on.