Should I be searching for new therapist?

I’ve seen this therapist for the last 4yrs I’d say. I feel like our sessions are okay though I hated when there would be a silence when I’d finish saying something. She’s just stare for about 2mins and then speak and it made me quite nervous but other than that, she was pretty helpful. My last appointment was 2mos ago and I’m spiraling. I had an appointment back in the second week of august. She cancelled the appointment so I called to reschedule for the earliest appointment. It was a whole month away. Okay, I think I can handle it. Set it for the second week of September. The day before I get a call from her office that she has once again cancelled my appointment. I understand things happen, doctors have lives obviously. But back to back appointments? And your appointments are booked out for an entire month? Like I said, I understand life happens but I’m debating searching for a different therapist and one that can see me more often. I’m a mother with PPD as well as bipolar and the last 2mos have been hell and I can feel myself slipping and I’m bottling up so much frustration. The only time I’ve ever had a therapist that saw me every 2 weeks was when I was fresh out of the grippy sock hospital. Then I was referred to my current therapist who will only see me once a month MAYBE every 3 weeks.