There have now been 8 full (1 000+) polls since the beginning of 2020.

The YouGov/Hanbury poll in February used a non-standard question and did not include 16/17 year-old’s, so can be ignored. The YouGov poll on January 22nd also did not include 16/17 year-old’s.

Two of the 7 valid polls have given Yes a clear 3% lead including the most recent for Panelbase/Scot Goes Pop.

No poll since early December 2019, six months ago, has suggested a clear lead for No.

The last 4 polls including 16/17 year-old’s and with the standard question gives an average lead for Yes of 1.5% whereas the last 4 in 2019 gave an average lead for No of more than 4%.

https://en.wikipedia.org/wiki/Opinion_polling_on_Scottish_independence