Both Teams to Score - Impact of Time Decay on Price Post Kick-Off

[Treble1999]

Hi everybody, I hope you are all having a good and profitable day

Hoping you can help me with a quick question please

I am particularly interested in the BTTS market and how the price changes as time decays once the match starts. I had a look at Soccer Mystic but couldn't see a function for this market. Is there a way to do it that eludes my novice eyes?
If not, does anyone have any suggestions on how I might find this information or are you aware of any tools available?

To give you a specific example of what I'm trying to achieve, using a game tonight:

Cagliari v Torino in Serie A
Current Betfair price for BTTS = 1.88
I would like to know how many minutes it will take for the price to improve to 2.00

And more generally I would like to be able to predict this from any price below 2.00

Thanks in advance for any information