I wouldn't do that. I would try taking in less mouthpiece so you can tongue the notes without arching or anchoring etc.Should I continue to use this tonguing method, as I suspect I should, or is there something I'm missing here?
The air pressure should be constant, it's only the tongue that stops it from entering the reed, like turning a tap on and off when there is a constant pressure in the water pipes.Do you hold the air column back with your tongue as you enter a note, or is there a timing issue I need to perfect to coordinate the arrival of the air column and the removal of my tongue perfectly?
The pressure of your lungs/diaphragm should be constant, and your throat should be open so there is actually nothing that possibly can stop it except your tongue.
Once you have developed a stronger diaphragm there are other techniques, but the above is wha is best for beginners, IMO.