My ds will be 5months on friday and hes on size 2 mam bottles but he takes about 45 mins to feed. Hes got reflux and has comfort milk, gaviscon and carobel. Ive tried size 3 teat a couple of times and hes much quicker drinking it however he does bring more up with the size 3 teat and is also more restless after feeding. Do i need to just give him more time to adjust to the size 3. ? It also runs out of the side of his mouth as if its maybe too fast. Any advice appreciated.