Sorry in advance this is long but I couldn't reply without quoting from your links!
Yes, for you, you did it to avoid low mood etc and it's working, which is good. But a couple of things- the NHS link is out of date and the 2nd link is a list of 'solutions' for bleeding after 6 months on continuous HRT.
The first website is nhs guidance on taking utrogestan and says take for 25 days in 28 or every day if prescriber thinks its ok to not bleed (ie 25 in 28 if a bleed is needed).
This ^^ is now out of date. It was written in 2023. Continuous is now every day, regardless. From Menopause Matters -
UTROGESTAN
Micronised progesterone
100mg at bedtime from day 1 to 25 of each 28 day cycle (licensed regimen), though taken every day is usually recommended
If you have not had a period for 6 to 12 months or more, your doctor may recommend that you take 1 capsule (100mg) once a day, on days 1 to 25 of your 28-day HRT cycle. Sometimes, your doctor might advise you to take it every day, if they think it's OK for you not to have a period.
Stopping progesterone for 3 days doesn't give anyone a period. It's a withdrawal bleed. That used to be done as a 'test' to see if any womb lining was shed. no one does this now. It's now every day, the same as combined continuous patches and tablets
The second talks about reducing unscheduled bleeding by taking a 3 day break on continuous.
The link you posted is about how there has been an increase in women being referred for investigations, mainly because of the use of micronised progesterone .
One of those options is to change it to a 'half-way house' between continuous and sequential- 25 days out of 28 so there will be a predictable withdrawal bleed if the womb lining is thickened.