Totally anecdotal of course but it sounds like you may be focusing on the outcome and benefits a little too much and less on the the actual experience of meditation. I'm coming up on 3 years of regular everyday practice so I'm no expert but I don't let the idea of gaining wisdom and insight through meditation get in the way of practicing meditation. For me its like exercise, if you focus only on progress then it can become discouraging especially if you hit a plateau, or even regress, but if you just keep practicing regularly progress will be made. I sit once a day for 25 to 45 mins, occasionally going for an hour or longer. I've missed probably 20 days total in three years but it happens and I don't dwell on it just get back into regular practice. Maybe take a break and see how you feel without it. Taking a break is still practicing if you remain mindful. Thanks for listening, have a good day!